Attackers could use a password weakness to render your laptop's battery useless--or overcharge it to start a fire, researcher warns.
Attackers could turn your laptop's dell vostro 1400 battery into a useless brick, or worse, overcharge it to the point where it starts a fire.
That warning comes by way of security expert Charlie Miller, who said that he's successfully reverse-engineered Apple laptop "smart sony vgp-bps2 battery," enabling him to reprogram their embedded controllers. Miller, who's a researcher at consultancy Accuvant, plans to document his research at next month's Black Hat conference in Las Vegas.
According to Miller's Black Hat talk description, "being able to control the working smart dell xps m1530 ac adapter battery and smart battery host may be enough to cause safety issues, such as overcharging or fire." Notably, when the lithium-ion batteries used in laptops overheat, they can rupture, causing injuries. On the other hand, well-manufactured Compaq presario x1000 battery also include numerous safety features, such as the ability to shut down in the event of overheating, as well as circuit interrupters designed to prevent overcharging or undercharging.
In his forthcoming talk, Miller plans to will demonstrate how to modify the firmware used by Apple smart batteries, disable their anti-tampering checksum, and reprogram the acer aspire 2000 battery firmware using "a simple API," which he plans to release publicly. While Miller's research focused on MacBook, MacBook Pro, and MacBook Air laptops from Apple--with whom he's already shared the results of his research--he suspects that Windows laptop batteries would be susceptible to firmware attacks.
Miller reverse-engineered Apple's battery firmware after the company issued a related firmware update in 2009. From there, he discovered the default password used to secure acer aspire 3000 battery, and from there, he learned how to read the values from that firmware and alter how the battery firmware interacts with the laptop. To date, Miller said he's successfully bricked seven Mac laptops via Dell xps m140 ac adapter battery firmware hacks.
Interestingly, however, reprogramming the IBM THINKPAD R SERIES Laptop DC Adapter battery firmware could also allow an attacker to introduce persistent malware into the laptop. "You could put a whole hard drive in, reinstall the software, flash the BIOS, and every time it would reattack," Miller told battery-store.co.uk . "There would be no way to eradicate or detect it other than removing the battery."
Despite the apparent threat vector, dell inspiron 1501 ac adapter battery firmware offers essential functionality, providing giving users precise readings of a laptop's remaining charge, operating time, and estimated recharge time, while also allowing the battery to control the voltage and current being provided by a charger.
But how feasible are attacks against battery firmware? Offering some perspective, Paul Ducklin, head of technology for Sophos in the Asia Pacific region, said in a blog post that when it comes to reprogramming controllers with field-updatable firmware, laptop dell inspiron 1525 battery aren't the only option. Indeed, an attacker could also target "the motherboard itself, your wireless card, your 3G modem, network card, graphics device, storage devices, and much more," he said.
To address the Apple laptop battery firmware vulnerability, Miller plans to release a utility called "Caulkgun" that will allow Apple users to change their laptop hp pavilion dv6000 battery passwords. On the upside, the utility would prevent an attacker from exploiting an Apple battery pack's embedded controller. On the downside, it would block any Apple patches, performance enhancements, or security updates from updating the dell inspiron 9400 ac adapter battery's firmware, unless the user first restored the battery's default password.
The vendors, contractors, and other outside parties with which you do business can create a serious security risk. Here's how to keep this threat in check. Also in the new, all-digital issue of Dark Reading: Why focusing solely on your own company's security ignores the bigger picture. Download it now. (Free registration required.)
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next blog: Motorola Triumph Review: The Best Contract-Free Phone Available Now
2011年7月28日星期四
2011年7月26日星期二
Motorola Triumph Review: The Best Contract-Free Phone Available Now
When it comes to prepaid phones, the Motorola Triumph is one of the best I have ever seen. This $300 device from Virgin Mobile (price as of July 25, 2011) proves that you don't need top-of-the-line specs, like a dual-core processor or 4G connectivity, to create a great phone.(Olympus FE-5000 Charger)
The 4.1-inch WVGA display does an excellent job of displaying crisp and clear images, though it was a little difficult to see outside. Putting the Triumph in a side-by-side comparison with the Droid 3, I found the screen on the Triumph to be much sharper, and its colors looked far more natural than those on its Verizon cousin.
Since Virgin Mobile lacks a 4G network, it makes sense that the Triumph would ship without 4G support. Regardless, the Triumph loaded Web pages and downloaded apps in a few brief seconds over Virgin's 3G network. Streaming high-quality YouTube videos might take a bit longer, but overall the phone performed solidly when surfing the Internet and performing day-to-day tasks. (Panasonic NV-GS17 Battery)Virgin uses Sprint's 3G network, so you'll have nationwide coverage and access to the same 3G speeds that Sprint users enjoy.
Call quality could have been clearer; the person I called said that I sounded slightly fuzzy, but they could easily understand and hear what I was saying.
Samsung P1000 Charger Battery life is what you would expect from a smartphone. After 4 hours of heavy use, the Sony NP-FH50 Battery dropped from 100 percent to 65 percent. If you love to download a ton of apps or play games for countless hours on your phone, you'll probably want to keep a charger with you just in case. If not, you can probably make it an entire day on a single charge.
The Motorola Triumph uses the stock Android 2.2 camera interface. Although the interface doesn't have as many bells and whistles as the ones by LG or Samsung, it does the job just as well. The Triumph has two cameras Olympus CAMEDIA C-760 ULTRA ZOOM Battery: a rear-facing 5-megapixel camera capable of shooting 720p video, and a front-facing VGA camera for video chatting.
The rear-facing camera captured decent photos, though it was slow to focus and take the picture. Indoor images came out slightly darker and could have been sharper. Images using the flash could have used more sharpness, too, but they weren't as washed out as images taken with a dual-LED flash.
Videos were clear, but audio sounded muffled when played through the phone's speakers.(Canon NB-5L battery) When I played the audio through my headphones, voices sounded slightly tinny, though clearer than they did over the phone's speakers.
The front-facing camera takes satisfactory photos and videos for a VGA camera, though unfortunately the Triumph has no preinstalled application to take advantage of the camera for video chats. Luckily you can install an app like Fring, which allows you to make and receive video calls with other Fring users.
Surprisingly, the Triumph features a Micro HDMI-out port, so you can share your media on a larger screen. You normally don't see HDMI-out ports on prepaid phones, so having one on the Triumph is really a great addition.(Sony DCR-HC51E Charger)
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next blog: Rechargeable Battery Kit
Design
The Triumph looks and feels sleeker than Motorola's recent offerings, the Droid X2 and the Droid 3. At 4.80 by 2.60 by 0.39 inches, the Triumph is slightly shorter and thinner than the Droid 3. The Triumph weighs 5.04 ounces, and feels well balanced in the hand.(Sony Cyber-shot DSC-W170 Charger)The 4.1-inch WVGA display does an excellent job of displaying crisp and clear images, though it was a little difficult to see outside. Putting the Triumph in a side-by-side comparison with the Droid 3, I found the screen on the Triumph to be much sharper, and its colors looked far more natural than those on its Verizon cousin.
Software
The Motorola Triumph runs stock Android 2.2 (Froyo), which isn't the most recent version of the OS. Last month Virgin Mobile pledged to ship only phones running vanilla Android, and so far the company seems to be holding true to that promise. (Canon DIGITAL IXUS 500 battery)But this doesn't mean that the Triumph is free from preloaded applications (also known as bloatware). While nowhere near as bad as what we saw on the Droid 3--or any other Verizon Android device, for that matter--the software on the Triumph includes certain applications (such as Poynt) that you cannot remove without rooting the device. Still, the fact that the phone ships without a custom overlay offsets the handful of preloaded apps.Performance
If you didn't look up the specs, you would swear that the Triumph was a dual-core phone. This single-core 1GHz powerhouse is as fast as any of the recent dual-core devices we've seen, and it can jump in and out of various applications with ease. (Canon NB-2L Charger )The Triumph was extremely responsive when I swiped through home screens and typed on the on-screen keyboard. The Triumph's fantastic performance might be the result of the absence of a custom overlay, though we haven't done any formal tests yet to be sure.Since Virgin Mobile lacks a 4G network, it makes sense that the Triumph would ship without 4G support. Regardless, the Triumph loaded Web pages and downloaded apps in a few brief seconds over Virgin's 3G network. Streaming high-quality YouTube videos might take a bit longer, but overall the phone performed solidly when surfing the Internet and performing day-to-day tasks. (Panasonic NV-GS17 Battery)Virgin uses Sprint's 3G network, so you'll have nationwide coverage and access to the same 3G speeds that Sprint users enjoy.
Call quality could have been clearer; the person I called said that I sounded slightly fuzzy, but they could easily understand and hear what I was saying.
Samsung P1000 Charger Battery life is what you would expect from a smartphone. After 4 hours of heavy use, the Sony NP-FH50 Battery dropped from 100 percent to 65 percent. If you love to download a ton of apps or play games for countless hours on your phone, you'll probably want to keep a charger with you just in case. If not, you can probably make it an entire day on a single charge.
Camera and Media
The Motorola Triumph uses the stock Android 2.2 camera interface. Although the interface doesn't have as many bells and whistles as the ones by LG or Samsung, it does the job just as well. The Triumph has two cameras Olympus CAMEDIA C-760 ULTRA ZOOM Battery: a rear-facing 5-megapixel camera capable of shooting 720p video, and a front-facing VGA camera for video chatting.The rear-facing camera captured decent photos, though it was slow to focus and take the picture. Indoor images came out slightly darker and could have been sharper. Images using the flash could have used more sharpness, too, but they weren't as washed out as images taken with a dual-LED flash.
Videos were clear, but audio sounded muffled when played through the phone's speakers.(Canon NB-5L battery) When I played the audio through my headphones, voices sounded slightly tinny, though clearer than they did over the phone's speakers.
The front-facing camera takes satisfactory photos and videos for a VGA camera, though unfortunately the Triumph has no preinstalled application to take advantage of the camera for video chats. Luckily you can install an app like Fring, which allows you to make and receive video calls with other Fring users.
Surprisingly, the Triumph features a Micro HDMI-out port, so you can share your media on a larger screen. You normally don't see HDMI-out ports on prepaid phones, so having one on the Triumph is really a great addition.(Sony DCR-HC51E Charger)
Bottom Line
The Motorola Triumph is the device to get if you are searching for a contract-free phone. The Triumph is fast, it has great battery life, and its screen is sharper than any of the qHD displays we've seen on Motorola's subsidized phones for larger carriers. (Canon BP-827 Battery)At $300 the Triumph is a steal, and I recommend it to anyone looking for a new phone. It may not take the best pictures, but overall the phone is excellent.more tags: Canon BP-511 battery, Spy pen video camera, Fujifilm FinePix J30 Charger, Casio NP-60 Charger, Jvc GR-45 Battery, Sony HDR-550/E Battery, Sony DSLR-A700 Battery, DIGITAL VIDEO CAMERA DC5288, Canon EOS 350D battery, Canon NB-2LH Battery, Panasonic NV-DA1 Battery, Samsung VP-D55 Battery, Canon NB-4L battery, Kodak Easyshare M863 Charger , Canon MV700 battery, Sony BC-CSG Charger
next blog: Rechargeable Battery Kit
2011年7月15日星期五
Rechargeable Battery Kit
Rechargeable battery kit has LG W2 Adapter battery that can restore full charge by applying electrical energy. These sorts of batteries are also identified as storage batteries or electrical power. Rechargeable NOKIA 6120 battery kit comes in various models with distinct chemical compounds. Very a couple of rechargeable battery kits are prone to damage simply because of the reverse charging. But, independent living technologies provide quality and durable rechargeable OLYMPUS LI-10C Charger batteries.
Correct now, Rechargeable battery kits are utilised for low energy appliances and with any electronic device that uses AA batteries. As the rechargeable Olympus Digital E-500 Battery kit comes with two AA size batteries and you want not verify regardless of whether the battery charged matches the charger. At times, typical rechargeable battery kit will have a lower power supply when compared to conventional batteries. But rechargeable Sony Hdr-fx1 Battery will give a consistent energy supply exactly where as the conventional batteries tend to plunge away following the use.
Numerous appliances works more efficiently with 1 to 1.5 volt or ever lesser, that is the performance could be according to consumer preference. Rechargeable Motorola MTS2000 battery are a lot more economical and it could be utilized in most of the equipments. These sorts of batteries are not recommended for certain appliances like:
• Never use rechargeable Toshiba pa3307u-1brs Battery in equipments which use batteries for a really long time even without having getting charged. For instance, clock, smoke alarms, chimes, and so on.
• Never use rechargeable batteries in equipments becoming indicated that they in no way fit for rechargeable. Be cautious mainly for photographic applications and equipments.
There are really various sorts of rechargeable batteries and every kinds holds diverse quantity of initial charging. Rechargeable Panasonic Lumix Dmc-fx55 Battery have a rating in terms of mAh – ‘milliamp hours’. The higher the number, the longer the batteries will successfully function with out needing a charge. Presently, the maximum rating is near 3000mAh. Although selecting the chargers, be selective and pick the greatest 1.
• Get a charger that ought to charge the batteries in a quite brief time and permit the leave the Toshiba Equium a100-027 Battery in the charger till you make use of it.
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Video Rating: 4 / five
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next blog: Three Local Teens Accused of Sexual Battery
Correct now, Rechargeable battery kits are utilised for low energy appliances and with any electronic device that uses AA batteries. As the rechargeable Olympus Digital E-500 Battery kit comes with two AA size batteries and you want not verify regardless of whether the battery charged matches the charger. At times, typical rechargeable battery kit will have a lower power supply when compared to conventional batteries. But rechargeable Sony Hdr-fx1 Battery will give a consistent energy supply exactly where as the conventional batteries tend to plunge away following the use.
Numerous appliances works more efficiently with 1 to 1.5 volt or ever lesser, that is the performance could be according to consumer preference. Rechargeable Motorola MTS2000 battery are a lot more economical and it could be utilized in most of the equipments. These sorts of batteries are not recommended for certain appliances like:
• Never use rechargeable Toshiba pa3307u-1brs Battery in equipments which use batteries for a really long time even without having getting charged. For instance, clock, smoke alarms, chimes, and so on.
• Never use rechargeable batteries in equipments becoming indicated that they in no way fit for rechargeable. Be cautious mainly for photographic applications and equipments.
There are really various sorts of rechargeable batteries and every kinds holds diverse quantity of initial charging. Rechargeable Panasonic Lumix Dmc-fx55 Battery have a rating in terms of mAh – ‘milliamp hours’. The higher the number, the longer the batteries will successfully function with out needing a charge. Presently, the maximum rating is near 3000mAh. Although selecting the chargers, be selective and pick the greatest 1.
• Get a charger that ought to charge the batteries in a quite brief time and permit the leave the Toshiba Equium a100-027 Battery in the charger till you make use of it.
• Ensure that the charger has clearly rated for the sort of battery you have purchased.
To buy a finest charger that will last long and to assist you in day to day life an in emergency scenario, just log on to independent living technologies and in couple of clicks, the ideal rechargeable battery kit will be yours.
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Accurate STORY FROM CLIFF BALDRIDGE CHIEF TECHNOLOGIST SBARTSTV ELITE TECH Review I finished an wonderful Assessment Please watch this video and pass it around. When we had been at CES The International Consumer Electronics Show in Vegas this year a Japanese Woman ran up to me, screaming “Battery Motorola GP900 battery, WATER Battery you can even use PEE!! I was like this lady is nuts she need to have lost her cash in the slots at the Venetian, and then she pulled out the Water Rechargeable Batteries. I got the samples and I tested them they function and it’s amazing why we do not use this technologies now. Check it out, Use can charge the Canon MV-30 Charger batteries with Urine, apple juice, even Blood! It will charge a flash light or a radio. Incredible. I am attempting to get this over from Japan so we can all use it. Get in touch with me if you have an investment interest. It is environmentally friendly also! Water Rechargeable AA and AAA FUJITSU E350 Laptop DC Adapter NoPoPo Japan test and evaluation by Cliff Baldridge sbartstv #39 -Premium Most Viewed (Nowadays) – Science & Technology – Germany #29 – Premium Most Viewed (Nowadays) – Science & Technology – Australia #50 – Premium Most Viewed (These days) – Science & Technology – Canada #42 – Premium Most Viewed (Today) – Science & Technologies – United Kingdom #19 – Premium Most Viewed (Right now) – Science & Technology – India #40 – Premium Most Viewed (Nowadays) – Science & Technology #24 – Premium Most Viewed (These days) – Science & Technology – Spain #25 – Premium Most Viewed (Right now) – Science & Technology – France #35 – Premium Most …Video Rating: 4 / five
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next blog: Three Local Teens Accused of Sexual Battery
2011年7月13日星期三
Three Local Teens Accused of Sexual Battery
Whether three teens arrested on charges of aggravated sexual battery will get bond now lies in the hands of a superior court judge. It could be a couple of months before their case is heard.(NIKON EN-EL14 battery)
Reporter: Dontaye Carter[UPDATE] 7-13-11 4:03 PM
It will be months before three Valdosta teens accused of aggravated sexual battery could get bond.
17-year-olds James Sharp, Kenney Mason and Robert Sharp were arrested on Saturday.
Fulton County deputies say the magistrate judge couldn't set bond Monday because of the type of crime committed. (PANASONIC NV-DS15 battery)
They were referred to the Superior Court. Police say the three of the boys held the victim down while another tried to assault him.
"I do believe there should have been some kind of supervision close by," says concerned mother Bridget Allen-Davis.
Deputies say they'll need to have all the evidence present before the teens can go before a superior court judge.
They say that could take two to three months. If convicted the teens could each face at least ten years in prison. (CASIO NP-20 charger)
----------------------------------------------------------------------------------------------
David Allen couldn't describe on camera how he felt after hearing that three Valdosta teens are accused of aggravated sexual battery on a Juvenile.
"There's a problem in the home or in the school system that's letting them go this far," said Allen.
According to police reports obtained from Rome, Georgia,
17-year-olds Kenney Mason, Robert Sharp, Jamel Sharp and another teen from Lawrenceville, Georgia were 'playing around' with a juvenile victim. (PANASONIC VW-VBJ10 battery)
But authorities say the teens took it too far when they tried to sexually assault the boy.
Police say Robert Sharp was the teen who attempted the act.
"I think he should see justice. I think that the people who done it should be prosecuted to the fullest extent," said Allen.
Detectives say 'playing around' should never reach these limits.
"To have a little more self-control when it comes to horse play or hazing with fellow teammates or friends or anybody, said Rome Police Detective Jeff Richerson. "There is a line that can be crossed. Unfortunately in this case it was crossed."(Sony Cyber-shot DSC-W115 charger)
The teens remained behind bars until bond is set.
The teens were in Rome, Georgia at a wrestling camp.
They had their first appearances Monday, July 11th.
A judge referred them to superior court because bond could not be set.
by Cows Rule Location: Lovett, FL on Jul 13, 2011 at 08:32 AM
This is just a guess but I think the odds are in my favor; the parents of these punks probably should be thrown in jail with them. The streets and schools are full of hoodlums (save the "not all kids are" comments). Unless our society gets a grip on birth control more of these type of children will be bred into our crumbling society. My prayers are with the victim and my hope is his family will make sure he gets any help he may need. The skill of nurturing is fading into oblivion. (SONY DCR-HC39E battery)
by Sick And Tired Location: Talllahassee on Jul 13, 2011 at 08:14 AM
Ok now it's young boys raping young boys, priest, ministers what the heck is going on here why is this seem to be the going thing now? I think we as parents know our children and should take actions to prevent anything like this from ever happening. And what has happened to the children that try this act has someone did the samething to them? This is a question that should be asked!!! (SONY NP-FP50 battery)
by Elizabeth Location: Tallahassee on Jul 13, 2011 at 07:40 AM
why blame the school system? respect with responisable BEGINS AT HOME. DON'T blame the SCHOOL SYSTEM,only cowards blames someone else Take responisable for your actions.
by granny on Jul 13, 2011 at 07:31 AM
thays horriblr, these kids need to be punished as much as the law will let. the victem will have problems the rest of his life, so they need some punnishment that will stick w/them forever.
by Brutal Location: Capital City, Florida on Jul 13, 2011 at 03:31 AM
Yessir! Got some sexual preditors here. My question to this blog is why were three arrested and not four? Hmmmm. They are just juvenile predators. No story here, nothing to see here...I see the big house on the horizon! Word! (OLYMPUS LI-10B charger)
by Appalled Location: Valdosta on Jul 13, 2011 at 02:33 AM
This also happened at a camp sponsored by a local Lowndes county churches youth group a few years ago. But the boys accused were children of "prominent" church members so it was hush hush. Instead of making the boys pay for their actions they blamed the youth leader for letting it happen and fired them! Go figure. I'm by no means saying it was the churches fault it happened but I do have a problem with the way it was handled! Speak up people, quit letting these miscreants get away with this garbage!
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next blog: Contour GPS review
2011年7月11日星期一
Contour GPS review
Contour's GPS is a hands-free action camera that can capture video at 1,920x1,080 at 30fps and has a built-in GPS receiver so can overlay video with a map of your route, plus speed and elevation. There's also built-in Bluetooth, which means you can use your iOS or Android smartphone's screen as a wireless viewfinder. Unfortunately, you'll need to buy the optional ConnectView card (around £25) to use an iOS device such as an iPhone 4, and the Android app isn’t finished yet. (dell pa-1900-04 ac adapter)
Without using an app, you can orient the camera using the pair of lasers which shines briefly when you turn the camera on to help you work out if it's pointing in the right direction. However, these are all but invisible in broad daylight so take some test footage before heading out.
The smartphone app is useful as it lets you adjust the camera's exposure and microphone sensitivity. The only other way to do this is by installing the free Storyteller application on your PC (dell inspiron 1501 ac adapter). You can choose from image presets, but there's also manual control over contrast, sharpness and exposure. A switch at the back of the camera lets you change between two recording modes, which are configurable in the software. One could be set to Contour's recommended 'action' setting, which is 720p at 60fps, while the other could be configured to shoot 5-megapixel still images every few seconds or every minute.
A 2GB card is included in the box (enough for a little over 20 minutes' footage at the highest quality), but up to 32GB cards are supported. The sony vaio pcg-505 dc adapter battery lasts around two to two and a half hours, but you can buy additional batteries for under £10; Nokia's BL-5C is compatible, but not officially supported. You also get two adhesive flat-surface mounts and a goggle mount - a helmet mount is optional and costs £17.
Plastic rails on either side of the camera allow it to be connected securely and removed from any mount, and the lens rotates 270 degrees so you can mount it on a variety of surfaces. The aluminium body is tough and rain-proof. An optional waterproof housing costs £30. Build quality is mixed: it feels sturdy overall, but the power button didn't work on occasion. (hp elitebook 8530w ac adapter)
Video quality is fairly good considering the size of the lens, but it's more on a par with a Flip Ultra HD than a handheld camcorder such as Canon's similarly-priced Legria HF R206[http://www.expertreviews.co.uk/camcorders/1283713/canon-legria-hf-r206]. Colours are accurate, and exposure changes quickly to changing light conditions. However, there's significant purple fringing on high-contrast lines and a fair amount of video wobble and shake when the camera is moving around - as it will for most of its journeys. It's disappointing there's no apparent image stabilisation.(dell latitude d630 battery)
Once you've shot your footage, you upload it to Storyteller, which lets you mark the best part and upload it to Contour's website. This keeps the GPS information, which is lost if you upload to YouTube. There are no other editing functions.(dell inspiron 1521 battery)
The Contour GPS isn't perfect, but it will give you a decent enough record of your day's events. The shaky video is our biggest gripe, but if you have some decent video editing software, much of that can be eliminated. If you need a hands-free video camera, the Contour is a decent choice.
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2011年7月6日星期三
Sulphur Breakthrough Significantly Boosts Lithium Battery Capacity
Trapping sulphur particles in graphene cages produces a cathode material that could finally make lithium Panasonic Nv-gs27 Battery capable of powering electric cars
But good as they are, lithium SAMSUNG PL65 Charger batteries are not up to the demanding task of powering the next generation of electric vehicles. They just don't have enough juice or the ability to release it quickly over and over again.
The problem lies with the cathodes in these Dell XPS M1330 ac Adapter batteries. The specific capacities of the anode materials in lithium MOTOROLA V500 battery are 370 mAh/g for graphite and 4200 mAh/g for silicon. By contrast, the cathode specific capacities are 170 mAh/g for LiFePO4 and only 150mAh/g for layered oxides.
So the way forward is clear: find a way to improve the cathode's specific capacity while maintaining all the other characteristics that Fujifilm Finepix f810 Battery require, such as a decent energy efficiency and a good cycle life.
Today, Hailiang Wang and buddies at Stanford University say they've achieved a significant step towards this goal using sulphur as the cathode material of choice.
Chemists have known for many years that sulphur has potential: it has a theoretical specific capacity of 1672 mAh/g. But it also has a number of disadvantages, not least of these is the fact that sulphur is a poor conductor. On top of this, polysulphides tend to dissolve and wash away in many electrolytes while sulphur tends to swell during the discharge cycle causing it to crumble. (Sony Cyber-Shot Dsc-w110 Battery)
But Wang and co say they've largely overcome these problems using a few clever nanoengineering techniques to improve the performance. Their trick is to create submicron sulphur particles and coat them in a kind of plastic called polyethyleneglycol or PEG. This traps polysulphides and prevents them from washing away.
Next, Wang and co wrap the coated sulphur particles in a graphene cage. The interaction between carbon and sulphur renders the particles electrically conducting and also supports the particles as they swell and shrink during each charging cycle.
The result is a cathode that retains a specific capacity of more than 600 mAh/g over 100 charging cycles.
That's impressive. Such a cathode would immediately lead to rechargeable lithium Lenovo ThinkPad SL300 ac Adapter batteries with a much higher energy density than is possible today. "It is worth noting that the graphene-sulfur composite could be coupled with silicon based anode materials for rechargeable Sony Dcr-hc35 Battery with significantly higher energy density than currently possible," say Wang and co
But there is more work ahead. Even though the material maintains a high specific capacity over 100 cycles, Wang and co say the capacity drops by 15 per cent in the process.
So they will be hoping, and indeed expecting, to improve on this as they further optimise the material.
The next step then is to create a working Toshiba Equium a100-306 Battery out of this stuff. Wang and co say they plan to couple it to a pre-lithiated silicon based anode to achieve this.
If it all works out (and that's a significant 'if'). your next car could be powered by Li-S Toshiba pa2429ur Battery.
Ref:arxiv.org/abs/1107.0109: Graphene-Wrapped Sulfur Particles as a Rechargeable Lithium-Sulfur-Battery Cathode Material with High Capacity and Cycling Stability
UncleAl
278 Comments- 1 Day Ago
- 07/05/2011
Enviro-whinerism is that philosophy and dialectic condemning progress in its every form. Terminate every viable future with UNKNOWN HAZARDS! The technology cannot be applied until all unknown hazards are evaluated, extrapolated over the next 1000 years of exposure.(Panasonic Vdr-m50 Battery)
This is not snit. 01 July 2011 initiated enforcement of California's carbon monoxide detector law. Every level of a home plus attached garages must have a carbon monoxide alarm. Average 30 of 37.3 million Californians die of CO poisoning each year. The 2010 census says the average California household is 2.9 people. Each life statistically saved cost at least $8.67 million including sales tax (for the very cheapest detectors), then bumped higher by multi-level homes with garages.(Acer Aspire 1410 Battery)
Weave the Safety Net tighter, sucker. A CO detector must be replaced every seven years. It's a feature not a bug.
This is not snit. 01 July 2011 initiated enforcement of California's carbon monoxide detector law. Every level of a home plus attached garages must have a carbon monoxide alarm. Average 30 of 37.3 million Californians die of CO poisoning each year. The 2010 census says the average California household is 2.9 people. Each life statistically saved cost at least $8.67 million including sales tax (for the very cheapest detectors), then bumped higher by multi-level homes with garages.(Acer Aspire 1410 Battery)
Weave the Safety Net tighter, sucker. A CO detector must be replaced every seven years. It's a feature not a bug.
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sault
73 Comments- 1 Day Ago
- 07/05/2011
Wow, not one thing in your rant was relevant to the article. I guess CO alarms are the boogeyman of the day for you then. Well, we might as well take seat belts and airbags out of cars too, right? Oh, and no need to have sprinkler systems in buildings either. You know, the cost per life saved is just TOO high, just like recalling the Ford Pinto was more expensive than the lawsuits Ford's lawyers predicted because of exploding gas tanks. That mindset borders on psychopathic.
As for the ACTUAL article, good job in explaining this breakthrough KFC. However, lithium ion Fujifilm Np-40 Battery ALREADY power electric cars that are on the market. See: Nissan Leaf et al. A few sentences in this post that state that Li Ion Compaq Business Notebook nc4000 battery cannot power electric cars need to be changed.
As for the ACTUAL article, good job in explaining this breakthrough KFC. However, lithium ion Fujifilm Np-40 Battery ALREADY power electric cars that are on the market. See: Nissan Leaf et al. A few sentences in this post that state that Li Ion Compaq Business Notebook nc4000 battery cannot power electric cars need to be changed.
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UncleAl
278 Comments- 1 Day Ago
- 07/05/2011
Nanoparticle products are subject to undefined acute and chronic toxicity tests. The "safety" requirements are embellished until the product is uncreated. At best the authors have engineering not technology, for "about 30-50% of our Li-S cells showed worse cycling performance with ~20%-25% decay per 100 cycles." If your read the article, that is for mere button cells not energy storage racks whacked around, roasted, and frozen in a car PANASONIC DVD-LV50 battery.
Airline seats are made to kill passengers not save them. Wrongful death is a cheaper settlement than perpetual care - and the weight savings vs. plane mileage pays for it and more. Airbags reduce injuries to idiots who do not wear $30 seatbelts. A late model car easily contains $3000 of airbags - two up front plus side curtain bags then electronics. You pay and pay for that: up front, with sales tax, with annual car registration based on purchase price, with annual car insurance in kind. Sell a million cars, lose $3 billion for "safety." The Pinto gas tank shield cost ~$5 installed.(Casio Exilim Ex-z30 Battery)
Learn the difference among philosophy, economics, and corruption. Look at the nationalities of the authors. America cannot manage discovery, it can only manage to end it.
Airline seats are made to kill passengers not save them. Wrongful death is a cheaper settlement than perpetual care - and the weight savings vs. plane mileage pays for it and more. Airbags reduce injuries to idiots who do not wear $30 seatbelts. A late model car easily contains $3000 of airbags - two up front plus side curtain bags then electronics. You pay and pay for that: up front, with sales tax, with annual car registration based on purchase price, with annual car insurance in kind. Sell a million cars, lose $3 billion for "safety." The Pinto gas tank shield cost ~$5 installed.(Casio Exilim Ex-z30 Battery)
Learn the difference among philosophy, economics, and corruption. Look at the nationalities of the authors. America cannot manage discovery, it can only manage to end it.
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shomas
178 Comments- 1 Day Ago
- 07/05/2011
Thank you. No one wants people to die, but too few consider the cost of prevention, while too many expect government to protect us from everything including ourselves.(OLYMPUS LI-10B battery )
The insane costs of excessive regulations such as CA co detectors significantly negatively impacts the economy making people spend significant amounts or money on things other then what they actually wanted or needed. Even more expensive yet more protective would be to outlaw gas stoves, furnaces, and water heaters. Then no one wold die of co poisoning in residences but gas cost less saving people money and thereby improving lives more significantly then the associated risks.
The insane costs of excessive regulations such as CA co detectors significantly negatively impacts the economy making people spend significant amounts or money on things other then what they actually wanted or needed. Even more expensive yet more protective would be to outlaw gas stoves, furnaces, and water heaters. Then no one wold die of co poisoning in residences but gas cost less saving people money and thereby improving lives more significantly then the associated risks.
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dd36
9 Comments- 1 Day Ago
- 07/05/2011
Yep, the USA ended the nanoparticles in my sunscreen... I mean they tested them so much that they killed innovation... I mean nobody can do anything because we have such stringent nanoparticle laws... My girlfriend spreads nanoparticles on her face every morning but they aren't allowed in anything else... uhhhhhh... nanoparticles are in my pots and bans but.... uhhhh...
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more tags: Canon Powershot sd40 Battery, Hp Photosmart r717 Battery, Olympus Az-1 Battery, Kodak Easyshare ls743 Battery, Samsung Digimax a6 Battery, Sony HDR-FX1 Charger, Panasonic Nv-gs15 Battery, Sony Dsc-f505 Battery, HP Compaq Business Notebook 6715b ac Adapter, Hp Compaq Business Notebook nx6310 battery, Canon Powershot sd40 Battery, SAMSUNG VP-M50 Battery
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