Hitachi, Ltd.

Seizi Koike

Tomoichi Kamo

Kozo Sakamoto

Masaru Kadoshima

Kazushige Kohno

Toshiya Doi

Shigeoki Nishimura

A sodium-sulfur battery in which sulfur and/or sodium polysulfide are used as cathode active materials, and an electronic conductor, which are arranged in a cathode chamber between a cathode container operating concurrently as a cathode electric collector and a solid electrolyte tube, and a layer, made of a material having a superior corrosion resistance against sulfur and sodium polysulfide, is provided between said solid electrolyte tube and said electronic conductor, wherein the cathode electric collector as the electronic conductor has been improved.

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Hitachi, Japan

Seizi Koike