Proton inserted ruthenium oxide electrode material for electroch

Details Proton inserted ruthenium oxide electrode material for electroch Proton inserted ruthenium oxide electrode material for electroch

1997-02-07

1999-02-23

Kincaid, Kristine

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

361508, 361516, 361503, 361528, H01G 900, H01G 904

Patent

active

058750924

ABSTRACT:
A high energy density electrochemical capacitors with electrodes is formed from proton inserted ruthenium oxides (e.g. HRuO.sub.2.xH.sub.2 O or HRuO.sub.2). The electrode material is formed by reducing ruthenium oxides (e.g. RuO.sub.2.xH.sub.2 O or RuO.sub.2) using electrochemical method or chemical reaction between ruthenium oxides with acetone or methanol. Electrochemical capacitors with electrodes formed of proton inserted ruthenium oxides possess higher energy density, lower resistance, broader operating temperature range, and longer lifetime than that with electrodes comprised ruthenium oxides.

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Raystrick, Proceedings of First Conference on Capacitors and Similar Energy Storage Devices, Deerfield Beach FL, Dec. 11, 1991, Ansum Enterprises Inc., Boca Raton, FL.
U.S. Pat. Application No. 08/232,901, filed Apr. 21, 1994, Zheng and Jow.

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