FUEL 230 |
| Novel electrodes have been formed by intercalation / reaction of heterocylcic monomers and heteropolyacid oxidants. Synthetic methodologies included monomer vapour transport onto carbon paper supports coated with heteropolyacid. Monomers leading to pellicular doped films included pyrrole (PY), N-methylpyrrole (MPY) and 3,4-ethylenedioxythiophene (EDOT), with heteropolyacids of molybdenum and vanadium. Incorporation of heteropolymetalates enhances the rate of proton intercalation and de-intercalation in such electrodes, which have been studied both in aqueous acid electrolytes and as pseudocapacitative (faradaic) electrodes in all-solid-state supercapacitors with Nafion 115 as electrolyte. Energy and power densities and self-discharge have been studied in this novel supercapacitor configuration, along with dependence of performance on relative humidity. |
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ACS/Supergen Joint Symposium on Energy Storage
1:25 PM-5:00 PM, Wednesday, August 22, 2007 Boston Park Plaza -- Arlington Rm, Oral
Division of Fuel Chemistry |