29 Jun '12, 9am

Paintable batteries on the way?

Researchers at Rice University have developed a lithium-ion battery that can be painted onto virtually any surface. The rechargeable battery consists of five spray-painted layers – two current collectors, a cathode, an anode and a polymer separator in the middle – which each represent the components in a traditional battery. "There has been a lot of interest in recent times in creating power sources with an improved form factor, and this is a big step forward in that direction," said materials scientist Pulickel Ajayan. To test the technique, the materials were airbrushed onto ceramic bathroom tiles, flexible polymers, glass, stainless steel and even a beer stein to see how well they would bond with each substrate. In the first experiment, nine bathroom tile-based batteries were connected in parallel. One was topped with a solar cell that converted power from a white labor...

Full article: http://www.eurekamagazine.co.uk/article/43362/Technique-c...

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