Carbon electrodes and energy storage device made thereof

Details Carbon electrodes and energy storage device made thereof Carbon electrodes and energy storage device made thereof

1995-04-07

1997-08-19

Ledynh, Bot L.

Electricity: electrical systems and devices

Electrolytic systems or devices

Double layer electrolytic capacitor

361508, 361528, H01G 900

Patent

active

056594577

ABSTRACT:
An electrode for an energy storage device uses a protonated polymer that is imbedded with an electroactive metal and coated onto activated carbon. Protonated poly(4-vinylpyridine) is coated onto particles of activated carbon that have high surface area, and the coating is then imbedded with a metal that exhibits electroactive behavior. In one embodiment, ruthenium is plated onto the poly(4-vinylpyridine) to create the electrode. Optionally, a coating of an ionically conductive negatively charged polymer is applied over the ruthenium-imbedded coating. The improved electrode is used to make a capacitor.

REFERENCES:
patent: 4633372 (1986-12-01), Calahan et al.
patent: 5455999 (1995-10-01), Weiss et al.
patent: 5501922 (1996-03-01), Li et al.

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