Hydrogen-absorbing alloy electrode and alkaline storage battery

Details Hydrogen-absorbing alloy electrode and alkaline storage battery Hydrogen-absorbing alloy electrode and alkaline storage battery

2005-06-30

2009-06-09

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C420S900000

Reexamination Certificate

active

07544442

ABSTRACT:
A hydrogen-absorbing alloy for a negative electrode in an alkaline storage battery includes a first hydrogen-absorbing alloy and a second first hydrogen-absorbing alloy. The first hydrogen-absorbing alloy contains at least a rare-earth element, Mg, Ni, and Al, and has an intensity ratio IA/IBof 0.1 or greater in X-ray diffraction analysis using Cu—Kα radiation as an X-ray source, where IAis the strongest peak intensity that appears in the range of 2θ=31° to 33°, and IBis the strongest peak intensity that appears in the range of 2θ=40° to 44°. The second hydrogen-absorbing alloy has a Co content greater than that of the first hydrogen-absorbing alloy.

REFERENCES:
patent: 5840440 (1998-11-01), Ovshinsky et al.
patent: 6130006 (2000-10-01), Kohno et al.
patent: 6248475 (2001-06-01), Hayashida et al.
patent: 11-323469 (1999-11-01), None
patent: 2001-291511 (2001-10-01), None
IPDL machine translation of JP 2001-291511.

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