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1. (WO2001001504) NICKEL POSITIVE ELECTRODE PLATE FOR ALKALINE STORAGE BATTERIES AND METHOD FOR PRODUCING THE SAME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2001/001504    International Application No.:    PCT/JP2000/003822
Publication Date: 04.01.2001 International Filing Date: 12.06.2000
IPC:
H01M 4/28 (2006.01), H01M 4/32 (2006.01), H01M 4/52 (2006.01)
Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP/JP]; 1006, Oaza-Kadoma, Kadoma-shi, Osaka 571-8501 (JP) (For All Designated States Except US).
MARUTA, Masayoshi [JP/JP]; (JP) (For US Only).
MURAOKA, Yoshiyuki [JP/JP]; (JP) (For US Only).
KATSUMOTO, Masumi [JP/JP]; (JP) (For US Only).
YOSHII, Fumihiko [JP/JP]; (JP) (For US Only)
Inventors: MARUTA, Masayoshi; (JP).
MURAOKA, Yoshiyuki; (JP).
KATSUMOTO, Masumi; (JP).
YOSHII, Fumihiko; (JP)
Agent: ISHII, Kazuo; Kitahama-Yamamoto Building, 3-6, Kitahama 2-chome, Chuo-ku, Osaka-shi, Osaka 541-0041 (JP)
Priority Data:
11/184934 30.06.1999 JP
Title (EN) NICKEL POSITIVE ELECTRODE PLATE FOR ALKALINE STORAGE BATTERIES AND METHOD FOR PRODUCING THE SAME
(FR) PLAQUE D'ANODE AU NICKEL POUR BATTERIES ALCALINES ET PROCEDE DE PRODUCTION
Abstract: front page image
(EN)The present invention provides a sintered nickel positive electrode plates for alkaline storage batteries with a high capacity density in which the working voltage during discharge is kept from dropping and the utilization of the positive electrode active material remains high even at high temperatures. The electrode comprises a porous sintered nickel substrate and metal hydroxides mainly composed of nickel hydroxide impregnated in the substrate, the metal hydroxides including: a first layer (11) comprising a hydroxide of at least one element selected from the group consisting of yttrium, ytterbium and lutetium, and being in contact with the substrate; a second layer (12) comprising a mixture of nickel hydroxide and cobalt hydroxide, and covering the first layer; and a third layer (13) comprising cobalt hydroxide and covering the second layer.
(FR)La présente invention concerne un modèle de plaques d'anode en nickel fritté pour batteries alcalines à densité de stockage élevée et se distinguant par une absence de chute de tension de travail pendant la décharge. En outre, la disponibilité électrique du matériau d'anode reste bonne aux hautes températures. Cette électrode est constituée d'un substrat poreux de nickel fritté et d'hydroxydes métalliques, essentiellement de nickel en imprégnation dans le substrat. En l'occurrence, ces hydroxydes métalliques forment trois couches. La première couche (11) d'hydroxyde de l'un au moins des éléments du groupe yttrium, ytterbium et lutécium, touche le substrat. La deuxième couche (12), qui recouvre la première couche, est faite d'un mélange d'hydroxyde de nickel et d'hydroxyde de cobalt. Enfin, la troisième couche (13), qui recouvre la deuxième couche, est à base d'hydroxyde de cobalt.
Designated States: CN, JP, US.
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: English (EN)
Filing Language: English (EN)