Feeds

Boffins build safer, more capacious lithium-ion battery

Holy Grail of laptop power packs found?

Business security measures using SSL

Scientists in the States have come up with a new take on the design of lithium-ion rechargeable batteries. They claim their version makes the power packs not only less prone to combustion but also able to hold up to 50 per cent more energy.

Researchers at the Argonne National Laboratory (ANL) in Argonne, Illinois discovered that combining a number of lithium and manganese metal-oxides into a composite material - dubbed 'lithiated nickel-manganese-cobalt oxide' - and using that as the basis for a battery's negative electrode increased the cell's capacity.

The cathode material reduces oxygen-catalysed reactions that can take place on the electrode's surface. It's these unwanted 'side reactions' that can cause the battery to catch fire and explode, quite a few incidents of which have been recorded over the last few years.

By making the cell more stable, batteries based on the new cathode can be charged to a higher voltage without the same risk of triggering the side-reactions seen in today's lithium-ion power packs, which use a cobalt-based cathode. That ups the capacity by 20-30 per cent.

Battery capacity is also proportional to cell size, and the Argonne team reckon their design boosts capacity sufficiently for manufacturers to not only offer higher capacities than current technology permits but also with a smaller-sized cell.

The new batteries even last longer, showing a far less rapid reduction in capacity over multiple charge-discharge cycles than conventional lithium-ion batteries do, the ANL team claimed.

ANL last month licensed its design to battery maker Toda Kogyo, allowing the Japanese company to bring the technology to market. At this stage, however, neither partners is saying how soon this could happen.

Secure remote control for conventional and virtual desktops

More from The Register

next story
Oi, Tim Cook. Apple Watch. I DARE you to tell me, IN PERSON, that it's secure
State attorney demands Apple CEO bows the knee to him
4K-ing excellent TV is on its way ... in its own sweet time, natch
For decades Hollywood actually binned its 4K files. Doh!
Phones 4u website DIES as wounded mobe retailer struggles to stay above water
Founder blames 'ruthless network partners' for implosion
DARPA-backed jetpack prototype built to make soldiers run faster
4 Minute Mile project hatched to speed up tired troops
Hey, Mac fanbois. HGST wants you drooling over its HUGE desktop RACK
What vast digital media repository could possibly need 64 TERABYTES?
Monitors monitor's monitoring finds touch screens have 0.4% market share
Not four. Point four. Count yer booty again, Microsoft
In a spin: Samsung accuses LG exec of washing machine SABOTAGE
Rival electronic giant tries to iron out allegations
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
Protecting users from Firesheep and other Sidejacking attacks with SSL
Discussing the vulnerabilities inherent in Wi-Fi networks, and how using TLS/SSL for your entire site will assure security.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.