Negative electrode for alkaline storage batteries

Details Negative electrode for alkaline storage batteries Negative electrode for alkaline storage batteries

1998-03-25

2000-02-29

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429223, 4292181, 429206, 420900, H01M 458, C01B 624

Patent

active

060307250

ABSTRACT:
The present invention provides alkaline storage batteries of which high-rate discharge characteristic at low-temperature, cycle life, and storage performance at high-temperature are improved in good balance and the cost performance is superior even when the content of cobalt is made extremely low by using in the negative electrode consisting of hydrogen absorbing alloy powders based on MmNi system alloys comprising MmNi.sub.5 system alloy which remains mostly crystalline in phase when absorbing hydrogen and Mm.sub.2 Ni.sub.7 system alloy which turns mostly amorphous in phase upon absorbing hydrogen.

REFERENCES:
patent: 5376474 (1994-12-01), Tadokoro et al.
patent: 5900334 (1999-05-01), Wada et al.
"Metal Hydride Electrode for High Energy Density Sealed Nickel-Metal Hydride Battery" by H. Ogawa, et al., pp. 393-410, Power Source 12, Research and Development in Non-Mechanical Electrical Power Sources.
Chemical Abstracts, vol. 114, No. 16, Apr. 22, 1991 Kamasaki, et al., Structure and hydrogen absorption characteristics of sputtered lanthanum-nickel alloy films.

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