Positive electrode material and nickel-zinc battery

Details Positive electrode material and nickel-zinc battery Positive electrode material and nickel-zinc battery

2005-06-21

2005-06-21

Weiner, Laura (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S229000, C429S232000, C252S182100, C252S518100, C252S521200, C423S594400, C423S594300

Reexamination Certificate

active

06908707

ABSTRACT:
The present invention provides a nickel-zinc battery of an inside-out structure, that is, a battery comprising a positive electrode containing beta-type nickel oxyhydroxide and a negative electrode containing zinc and having a similar structure to an alkali manganese battery, in which the beta-type nickel oxyhydroxide consists of substantially spherical particles, mean particle size of which is within a range from 19 μm to a maximum of 40 μm, the bulk density of which is within a range from 1.6 g/cm3to a maximum of 2.2 g/cm3, tap density of which is within a range from 2.2 g/cm3to a maximum of 2.7 g/cm3, specific surface area which based on BET method is within a range from 3 m2/g to a maximum of 50 m2/g, and the positive electrode of the nickel zinc battery contains graphite powder, where the weight ratio of graphite powder against a total weight of the positive electrode is defined within a range from 4% to a maximum of 8%.

REFERENCES:
patent: 5905003 (1999-05-01), Young et al.
patent: 6074785 (2000-06-01), Dansui et al.
patent: 6228535 (2001-05-01), Fierro et al.
patent: 6333126 (2001-12-01), Maruta
patent: 6706442 (2004-03-01), Sakamoto et al.

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