Hydrides of lithiated nickel dioxide and secondary cells prepared therefrom
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United States of America Patent
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Jan 19, 1993
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N/A
app pub date -
Jan 30, 1992
filing date -
Jul 23, 1990
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Abstract
Hydrides of lithiated nickel dioxide are disclosed, prepared by providing a substantially homogeneous dry intermediate mixture of a starting material containing a nickel compound selected from nickel oxide, nickel hydroxide and mixtures thereof, and optionally including one or more oxides or hydroxides of a transition metal selected from cobalt, iron, chromium, titanium, manganese and vanadium, together with about a 25% stoichiometric excess of lithium hydroxide. The mixture is heat-treated at a temperature above about 600.degree. C. in an atmosphere having a partial pressure of water vapor greater than about two torr. Electrochemical cells are also disclosed, incorporating the disclosed hydrides as a cathode-active material.
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