Carbon electrodes and energy storage device made thereof
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United States of America Patent
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Aug 19, 1997
Grant Date -
N/A
app pub date -
Apr 7, 1995
filing date -
Apr 7, 1995
priority date (Note) -
Expired
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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.
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