Preparation of VO.sub.2 (B) and a non-aqueous secondary cell using VO.sub.2
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United States of America Patent
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Oct 23, 1990
Grant Date -
N/A
app pub date -
Sep 8, 1988
filing date -
Sep 8, 1988
priority date (Note) -
Expired
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Abstract
VO.sub.2 (B) is prepared by heating NH.sub.4 VO.sub.3 to a decomposition temperature between about 200.degree. C. and about 537.degree. C. in an atmosphere comprising excess ammonia, whereby ammonia and water vapor are liberated, leaving a residue of VO.sub.2 (B), the liberated water vapor is removed and the VO.sub.2 (B) recovered. Non-aqueous secondary cells having a cathode including the resulting VO.sub.2 (B) resist loss of energy capacity upon cycling.
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