Matsushita Electric Industrial Co., Ltd.

Kuninori Omura

Hitoshi Mikuriya

Chikara Kasai

Sadaaki Yokoh

Jun Matsumura

Jun Matumura

An electrode for a battery with small variations in the discharge capacity and excellent reliability is disclosed. It comprises a sheet of porous metal substrate having three-dimensional communicating spaces for containing an active material. The substrate has a layer filled with the active material and occupying most of the thickness of the electrode, and a layer of current collector composed of a metallic foil which is not filled with active material and has reduced porosity.

Electrodes for battery and method of fabricating the same

An electrode for a battery with small dispersion in its discharge capacity and excellent reliability is disclosed. It comprises a sheet of porous metal substrate having three-dimensional communicating spaces, and an active material. The substrate has a higher porosity layer occupying most part of the spaces connected to the first principal face and a lower porosity layer occupying the remaining part of the spaces connected to the second principal face; the lower porosity layer has a sufficiently smaller thickness than the higher porosity layer; and the active material is filled substantially in the higher porosity layer.

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Kamakura, Japan

Kuninori Omura