Researchers develop spray-on battery
A cutting-edge battery that can be spray-painted on just about any surface was unveiled Thursday by a research team that tested it on everything from bathroom tiles to a beer mug.
The design could revolutionise the design of lithium-ion batteries that power our laptops, cellphones and electric cars — leading to slimmer, lighter devices with built-in power supplies.
Using liquid versions of the same components found in conventional lithium-ion batteries, the team airbrushed their invention, in several layers, on to a glass slide, a stainless steel sheet, glazed ceramic tiles, and the curved surface of a mug.
“Basically, using this approach, we can convert any object or surface to a battery,” said lead author Neelam Singh, an engineering student at Rice University in Texas.
Lithium-ion (or Li-ion) batteries work by transferring a charge between a negative and positive electrode.
http://www.rawstory.com/rs/2012/06/28/researchers-develop-spray-on-battery/
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