Negative electrode for alkaline storage battery and alkaline storage battery

A storage battery and negative electrode technology, which is applied in the direction of alkaline battery electrodes, alkaline storage batteries, battery electrodes, etc., can solve the problems of discharge capacity and discharge voltage drop, alkaline battery cycle life drop, and hydrogen storage alloy corrosion resistance deterioration. , to achieve the effect of preventing the increase of internal impedance, good storage characteristics, and suppressing the decrease of discharge capacity and discharge voltage
CN101378121AActive Publication Date: 2009-03-04SANYO ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SANYO ELECTRIC CO LTD
Publication Date
2009-03-04

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Abstract

An alkaline storage battery has a positive electrode, a negative electrode utilizing hydrogen-absorbing alloy, and an alkaline electrolyte, and wherein the negative electrode contains a hydrogen-absorbing alloy represented by the general formula Ln1-xMgxNiy-a-bAlaMb, where Ln is at least an element selected from rare-earth elements including Y and Zr and Ti, M is at least one element selected from V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Ga, Zn, Sn, In, Cu, Si, P and B, 0.05<=x<=0.30, 0.05<=a<=0.30, 0<=b<=0.50 and 2.8<=y<=3.9 and fluorine resins having an average molecular weight of 1,000,000 or less.
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Description

technical field

[0001] The present invention relates to an alkaline storage battery and a negative electrode for an alkaline storage battery used for the negative electrode of the alkaline storage battery. The alkaline storage battery comprises: a positive electrode; a negative electrode using a hydrogen storage alloy; and an alkaline electrolyte. Alkaline storage battery, in the alkaline storage battery that uses the negative electrode for alkaline storage battery containing fluororesin in the hydrogen storage alloy containing Mg-Ni-rare earth, improve the above-mentioned negative electrode for alkaline storage battery, when it is left in a charged state, prevent the discharge capacity and discharge voltage are lowered, and an alkaline storage battery with good storage characteristics can be obtained. Background technique

[0002] Historically, nickel-cadmium storage batteries have been widely used as alkaline storage batteries, but in recent years, compared with nickel-cad...

Claims

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