Preparation of high energy capacity ruthenium oxide
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United States of America Patent
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Feb 15, 2000
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N/A
app pub date -
Oct 8, 1997
filing date -
Oct 8, 1997
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Expired
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Abstract
Amorphous, highly dispersed ruthenium oxide having a high energy storage capacity may be prepared using high surface area carbon as carbon powder or as carbon fibers as a template for the ruthenium oxide. The process avoids the disadvantages of a sol-gel process, and utilizes deposition of a ruthenium source within the pores of carbon fibers dispersed in a cellulose matrix. The ruthenium source subsequently is converted to amorphous ruthenium oxide hydrate by heating in a steam atmosphere containing at least 30 weight percent water at temperatures up to about 500.degree. C.
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