Positive electrode material for alkaline storage battery, method

Details Positive electrode material for alkaline storage battery, method Positive electrode material for alkaline storage battery, method

1997-12-16

2000-07-04

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429223, 4292313, 423594, H01M 452, H01M 432, C01G 5104

Patent

active

060836423

ABSTRACT:
Disclosed is a positive electrode material which provides an alkaline storage battery having high active material utilization, wherein good capacity recovery can be obtained by charging even after standing in the state of overdischarge or short circuit, and reduction in capacity scarcely arises. This active material comprises nickel hydroxide particles and a cobalt oxide. The cobalt oxide is a higher cobalt oxide containing as a main component .gamma.-cobalt oxyhydroxide, which belongs to any one crystal system of hexagonal, orthorhombic and monoclinic systems and has a layered structure, wherein a lattice spacing of the (003) plane is from 5.5 to 7.0 angstroms and an average valence of cobalt is higher than 3.0. Those which are prepared by coating the surface of nickel hydroxide particles with the higher cobalt oxide are preferable.

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patent: 5629111 (1997-05-01), Yamawaki et al.
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