Chemistry: electrical current producing apparatus – product – and – Fluid active material or two-fluid electrolyte combination...
Patent
1990-09-18
1991-10-01
Kalafut, Stephen J.
Chemistry: electrical current producing apparatus, product, and
Fluid active material or two-fluid electrolyte combination...
429217, 429241, H01M 462, H01M 470
Patent
active
050532928
ABSTRACT:
A nickel-metal hydride secondary cell comprising an enclosure, a non-sinter type nickel positive electrode accommodated in said enclosure and formed of a conductive core and a layer formed on the core and made mainly of a binding medium, nickel hydroxide powder, and cobalt monoxide powder, a hydrogen absorbing alloy negative electrode accommodated in said enclosure and formed of punched metal and a layer formed on the punched metal by applying a paste thereto, said punched metal having a plurality of apertures having a diameter of 1 to 5 mm at an aperture rate of 45 to 70% and having a thickness equal to 10 to 35% of the overall thickness of the negative electrode, and said paste made of 100 parts by weight of hydrogen absorbing alloy powder, 0.005 to 1 part by weight of polyacrylate, 0.01 to 1 part by weight of carboxymethylcellulose, 0.5 to 7 parts by weight of fluoro-resin, and 0.1 to 4 parts by weight of conductive material powder, a separator made of synthetic resin unwoven fabric and located between said positive and negative electrodes, and an alkali electrolyte contained in said enclosure.
REFERENCES:
patent: 4189533 (1980-02-01), Sugalski
patent: 4584249 (1986-04-01), Smithrick
patent: 4849312 (1989-07-01), Mitsuyasu et al.
Hasebe Hiroyuki
Hayashida Hirotaka
Mitsuyasu Kiyoshi
Sato Yuji
Sawatari Ichirou
Kabushiki Kaisha Toshiba
Kalafut Stephen J.
Toshiba Battery Co., Ltd.
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