Feeds

Nanotubes, sulfur expand battery storage

Blast-proof battery boffins back

Top 5 reasons to deploy VMware with Tegile

The group that last year gave the world the unexplodable lithium battery is back, this time using a combination of nanotubes, sulfur and an electrolyte additive to achieve what they say is a tenfold improvement in capacity.

In particular, the group, led by Stanford University’s Yi Cui, believes the sulfur-coated carbon nanotube cathode is a key step in improving battery life – fast becoming a bottleneck for a host of technologies, from smartphones and tablets all the way up to electric cars and green power, all of which suffer from energy density constraints.

“I strongly believe that’s a promising future choice to make better batteries,” Cui told Futurity.

Last year, the group was in the news at the other end of the battery. They added silicon nanowires to the anode of the battery, creating what they say is a safer battery while at the same time increasing capacity and using cheaper and less toxic materials than are used in lithium-ion batteries.

Lithium sulfur-based batteries are a focus for research because they offer high charge density. However, using the material in a conventional battery design only yields a device of short life. Futurity explains that this is because the sulfur is exposed to and reacts with the electrolyte.

The carbon nanotubes protect the sulfur from this, making lithium-sulfur batteries a better candidate for commercialization. The research is published in Nano Letters. ®

Beginner's guide to SSL certificates

More from The Register

next story
PORTAL TO ELSEWHERE scried in small galaxy far, far away
Supermassive black hole dominates titchy star formation
Boffins say they've got Lithium batteries the wrong way around
Surprises at the nano-scale mean our ideas about how they charge could be all wrong
Edge Research Lab to tackle chilly LOHAN's final test flight
Our US allies to probe potential Vulture 2 servo freeze
Europe prepares to INVADE comet: Rosetta landing site chosen
No word yet on whether backup site is labelled 'K'
Cracked it - Vulture 2 power podule fires servos for 4 HOURS
Pixhawk avionics juice issue sorted, onwards to Spaceport America
Archaeologists and robots on hunt for more Antikythera pieces
How much of the world's oldest computer can they find?
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.