Feeds

Stanford prof pops lid on paint-on battery tech

Decorators to charge more

Choosing a cloud hosting partner with confidence

Boffins in America have developed a "one-dimensional" nanomaterial liquid which can be painted onto walls or pieces of paper to create working batteries.

"If I want to paint my wall with a conducting energy storage device, I can use a brush," says Yi Cui, materials engineering prof at Stanford.

"These nanomaterials are special," he adds. "They're a one-dimensional structure with very small diameters."

Cui's electro-paint can be used as an electrode in other devices, or as a battery or supercapacitor in its own right. As a battery, its energy/weight ratio isn't very impressive - just 7.5 watt-hours/kg when "weight of all of the dead components is considered", or 30-47 Wh/kg on its own, still less than typical lead-acid jobs.

On the other hand, the paint can handle very rapid discharge rates, 200 kilowatts/kg, and CUI says it's very durable too; able to stake 40,000 charge/discharge cycles, maybe ten times as much as a normal li-ion job.

The rapid discharge in particular could be useful in applications like electric or hybrid vehicles, which often need to put out energy very fast for brief periods. This kind of capability could also be useful on the power grid, as it could let storage facilities cope with the often very rapid changes in output from wind or solar generating facilities.

"This technology has potential to be commercialized within a short time," says Peidong Yang, chemistry prof at Berkeley. "It's nanotechnology related to daily life, essentially."

Cui and his colleagues' research is published in the Proceedings of the National Academy of Sciences, here. ®

Secure remote control for conventional and virtual desktops

More from The Register

next story
Ex-Soviet engines fingered after Antares ROCKET launch BLAST
Speculation rife, but Orbital claims it's too early to tell
Voyager 1 now EIGHTEEN LIGHT HOURS from home
Almost 20 BEEELION kilometres from Sol
MEN: For pity's sake SLEEP with LOTS of WOMEN - and avoid Prostate Cancer
And, um, don't sleep with other men. If that's what worries you
Jim Beam me up, Scotty! WHISKY from SPAAACE returns to Earth
They're insured for $1m, before you thirsty folks make plans
ROGUE SAIL BOAT blocks SPACE STATION PODULE blastoff
Er, we think our ISS launch beats your fishing expedition
NASA: Spacecraft crash site FOUND ON MOON RIM
'What fun!' exlaims NASA boffin who found the LADEE
BAE points electromagnetic projectile at US Army
Railguns for 'Future fighting vehicle'
OK Google, do I have CANCER?
Company talks up pill that would spot developing tumors
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
Protecting against web application threats using SSL
SSL encryption can protect server‐to‐server communications, client devices, cloud resources, and other endpoints in order to help prevent the risk of data loss and losing customer trust.