Mitsubishi Heavy Industries Limited

Katsuzou Sudou

Nozomu Kawasetsu

Keiichi Iwamoto

Akihiro Sawata

Masayuki Fukagawa

A sodium secondary battery which assures excellent sealing and can be manufactured in a simple manner is provided. The battery includes a negative electrode chamber defined by the inside of a bottom-closed, hollow cylindrical, solid electrolyte accommodated in an outer case and a positive electrode chamber formed outside the solid electrolyte and containing a porous electrode,impregnated with sulfur which serves as a positive electrode active substance. A cover, which closes the opening portion of the outer case, is fastened to the outer case by use of bolts and the interposition of an insulator.

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Nagoya, Japan

Katsuzou Sudou