Toto Ltd.

Hiroshi Niimi

Akira Kawakami

Yutaka Momiyama

Shuichiro Saigan

Shigeru Ando

Megumi Shimazu

Yuya Takahashi

Akira Ishiguro

Disclosed is a durable solid oxide fuel cell that is less likely to have a problem of a conventional solid oxide fuel cell that an air electrode containing a peroviskite oxide, when exposed to a reducing atmosphere, is separated at the stop of operation, especially shutdown. The solid oxide fuel cell includes an air electrode that is obtained by firing a compact containing a perovskite oxide and sulfur element. The content of the sulfur element in the air electrode as fresh after firing or before the start of power generation is in the range of 50 ppm to 3,000 ppm. The separation of the air electrode is effectively suppressed at the shutdown operation.

Solid oxide fuel cell

Disclosed is a solid oxide fuel cell that has a high initial power generation performance and a good power generation durability. The fuel cell comprises at least a fuel electrode, an electrolyte, an air electrode, and a current collecting part disposed on the air electrode, wherein the current collecting part comprises an electroconductive metal and an oxide, the electroconductive metal is silver and palladium, the oxide is a perovskite oxide, and the content of the oxide is more than 0 (zero) and less than 0.111 in terms of weight ratio to the electroconductive metal.

Solid oxide fuel cell and fuel cell module comprising the solid oxide fuel cell

Growing community of inventors

Kanagawa-ken, Japan

Hiroshi Niimi