Battery electrode producing method, and battery electrode

Abstract

A method of producing an electrode includes the steps of filling an active material in an electrode substrate made of woven or non-woven fabric having its fiber surface coated with metal, and pressing the electrode substrate to obtain an electrode, wherein the pressing is performed using the electrode substrate having a thickness of less than 2.0 t when the thickness of the electrode after the pressing is t. This ensues that the electrode substrate has a thickness allowing the active material of a sufficient amount to be filled therein, and a battery electrode in which the filled active material is unlikely to peel off from the electrode substrate can be produced. Accordingly, a battery electrode having a desired thickness and desired capacity and that can suppress degradation in battery performance due to repeated charge and discharge, and its producing method are provided.

Description

Claims

1. A producing method of a battery electrode, comprising the steps of: filling an active material in an electrode substrate made of woven or non-woven fabric having its fiber surface coated with metal; andpressing the electrode substrate to obtain an electrode, whereinsaid step of pressing is carried out by using the electrode substrate having a thickness of less than 2.0 t when a thickness of the electrode after the pressing is t.

2. A battery electrode, produced by the method as recited in claim 1.

3. The battery electrode according to claim 2, having a positive electrode capacity density of 400 mAh/cc to 550 mAh/cc and a thickness of 0.4 mm to 0.55 mm, and wherein the active material filled in the electrode substrate is a positive electrode active material for a nickel-hydrogen battery.

4. The battery electrode according to claim 2, having a positive electrode capacity density of 550 mAh/cc to 750 mAh/cc and a thickness of 0.55 mm to 0.75 mm, and wherein the active material filled in the electrode substrate is a positive electrode active material for a nickel-hydrogen battery.