Feeds

Stanford prof pops lid on paint-on battery tech

Decorators to charge more

Boost IT visibility and business value

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. ®

Boost IT visibility and business value

More from The Register

next story
Just TWO climate committee MPs contradict IPCC: The two with SCIENCE degrees
'Greenhouse effect is real, but as for the rest of it ...'
BEST BATTERY EVER: All lithium, all the time, plus a dash of carbon nano-stuff
We have found the Holy Grail (of batteries) - boffins
Asteroid's DINO KILLING SPREE just bad luck – boffins
Sauricide WASN'T inevitable, reckon scientists
Flamewars in SPAAACE: cooler fires hint at energy efficiency
Experiment aboard ISS shows we should all chill out for cleaner engines
Boffins discuss AI space program at hush-hush IARPA confab
IBM, MIT, plenty of others invited to fill Uncle Sam's spy toolchest, but where's Google?
NASA Mars rover FINALLY equals 1973 Soviet benchmark
Yet to surpass ancient Greek one, however
Famous 'Dish' radio telescope to be emptied in budget crisis: CSIRO
Radio astronomy suffering to protect Square Kilometre Array
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.