Nickel electrode for an alkaline secondary battery

Details Nickel electrode for an alkaline secondary battery Nickel electrode for an alkaline secondary battery

1995-10-19

1997-06-03

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

H01M 432

Patent

active

056353138

ABSTRACT:
There is provided a nickel electrode for an alkaline secondary battery, in which the coefficient of use of nickel hydroxide, which is an active substance, is high, the swell restricting effect is high, and the charging/discharging cycle life characteristic is high. The nickel electrode is formed by filling a conductive, porous substance of a three-dimensional network structure with a mixture containing an active substance consisting mainly of nickel hydroxide. The nickel hydroxide is such that, when thermogravimetric analysis is performed at a heating rate of 10.degree. C./min and the TG curve is plotted, the value obtained by subtracting the weight decrease percentage at a temperature of T.degree.C. at which the DTG curve, the differential curve of the TG curve, turns to an upward curve from the weight decrease percentage of the nickel hydroxide at a temperature of 100.degree. C. is 0.6 to 1.5%.

REFERENCES:
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patent: 4940553 (1990-07-01), Von Benda et al.
patent: 5500309 (1996-03-01), Lichtenberg et al.
M. Oshitani et al, "A Study of the Swelling of a Sintered Nickel Hydroxide Electrode", Journal of Applied Electrochemistry, vol. 16, 1986, pp. 403-412.
Patent Abstracts of Japan, vol. 017, No. 173, 2 Apr. 1993 of JP-A-04 328257 (Toshiba Battery Co., Ltd.), 17 Nov. 1992.
Patent Abstracts of Japan, vol. 011, No. 007, 9 Jan. 1987 of JP-A-61 183868 (Yuasa Battery Co., Ltd.), 16 Aug. 1986.
Patent Abstracts of Japan, vol. 017, No. 334, 24 Jun. 1993 of JP-A-05 041213 (Sanyo Electric Co., Ltd.), 19 Feb. 1993.

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