Flexible, Transparent Supercapacitors are Latest Devices from USC Nanotube Lab

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http://viterbi.usc.edu/news/news/2009/flexible-transparent-supercapacitors.htm

Flexible, Transparent Supercapacitors are Latest Devices from USC Nanotube Lab

Earlier work demonstrated non-CMOS transistors and intergrated cirucits

March 24, 2009 —

It is a completely transparent and flexible energy conversion and storage device that you can bend and twist like a poker card.

It continues a line of prototype devices created at the USC Viterbi School of Engineering that can perform the electronic operations now usually handled by silicon chips using carbon nanotubes and metal nanowires set in indium oxide films, and can potentially do so prices competitive with these existing technologies.

The latest device is a supercapacitor, a circuit component that can temporarily store large amounts of electrical energy for release when needed. A team headed by Chongwu Zhou describes it a newly-published paper on “Flexible and Transparent Supercapacitor based on Indium Nanowire / Carbon Nanotube Heterogeneous Films” in the journal Applied Physics Letters (Vol.94, Issue 4, Page 043113, 2009).

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The device stores an energy density of 1.29 Watt-hour/kilogram with a specific capacitance of 64 Farad/gram. By contrast, conventional capacitors usually have an energy density of less than 0.1 Wh/kg and a storage capacitance of several tenth millifarads.

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