| New Method Manufactures ‘Supercapacitors’ on Flex-Film | | Print | |
| Written by Chelsey Drysdale | |||
| Monday, 30 November 2009 19:49 | |||
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LOS ANGELES – Researchers at UCLA and Stanford have developed an economical method for manufacturing flexible supercapacitors that exhibit power and energy density higher than commercially available devices. The researchers developed a method of spray printing single-walled carbon nanotubes on two flexible plastic films, putting a gel electrolyte between them. The gel electrolyte is a mix of powdered polyvinyl alcohol, phosphoric acid and water. The surface of the nanotubes collects charges, storing energy. The supercapacitor has a reported power density of 70 kw/kg. It has the possibility of improving its energy density, which could lead to supercapacitors replacing batteries.
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Can high-mix, low-volume production succeed in China? You bet. In the 1970s, if you set up a contract manufacturing shop in a good location, customers eventually would walk through the doors. In the real world, things quickly changed for American companies, as OEMs, driven by maximizing shareholder value, searched for cheaper sources offshore. The first options were Hong Kong, Malaysia and Singapore. After prices increased in these countries, greener pastures were found in China....
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