Alkaline storage battery and method of producing negative electrode thereof
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United States of America Patent
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-
Jul 23, 1991
Grant Date -
N/A
app pub date -
May 24, 1989
filing date -
Feb 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is an improvement in a negative electrode of an alkaline storage battery, in which the negative electrode is constituted by a hydrogen absorbing alloy capable of absorbing/desorbing hydrogen electrochemically, and a hydrophobic material and a hydrophilic material are provided in a portion of the surface layer of the negative electrode and in the side of the negative electrode respectively so as to properly secure both the wetting property and hydrophobic property of the negative electrode against the alkaline electrolytic solution. Accordingly, a hydrogen can be absorbed electrochemically in the portion of the negative electrode which is wetted by the electrolytic solution and a hydrogen gas generated in charging the battery can be absorbed by a vapor phase reaction in the hydrophobic portion of the negative electrode which is exposed to the vapor phase so that the internal gas pressure can be reduced to thereby make it possible to perform rapid charging.
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