Sumitomo Electric Industries, Limited

Kyoto University

Donglin Han

Masatoshi Majima

Naho Mizuhara

Chihiro Hiraiwa

Tetsuya Uda

Takahiro Higashino

Hiromasa Tawarayama

Yohei Noda

Atsushi Yamaguchi

Hisao Takeuchi

Mitsuyasu Ogawa

Kazunari Miyamoto

Akiko Kuramitsu

Takayuki Onishi

A proton conductor contains a metal oxide that has a perovskite structure and that is represented by formula (1): ABMO, where an element A is at least one element selected from the group consisting of Ba, Ca, and Sr, an element B is at least one element selected from the group consisting of Ce and Zr, an element M is at least one element selected from the group consisting of Y, Yb, Er, Ho, Tm, Gd, In, and Sc, &#x3b4; indicates an oxygen deficiency amount, and 0.95&#x2264;x&#x2264;1 and 0&#x3c;y&#x2264;0.5 are satisfied.

Proton conductor, proton-conducting cell structure, water vapor electrolysis cell, and method for producing hydrogen electrode-solid electrolyte layer complex

A method for producing a cell structure includes: a step of firing a laminated body of a layer containing an anode material and a layer containing a solid electrolyte material, to obtain a joined body of an anode and a solid electrolyte layer; a step of laminating a layer containing a cathode material on a surface of the solid electrolyte layer, and firing the obtained laminated body to obtain a cathode. The anode material contains a metal oxide Ma1 and a nickel compound. The metal oxide Ma1 is a metal oxide having a perovskite structure represented by A1B1M1O(wherein: A1 is at least one of Ba, Ca, and Sr; B1 is at least one of Ce and Zr; M1 is at least one of Y, Yb, Er, Ho, Tm, Gd, In, and Sc; 0.85&#x2264;x1&#x2264;0.99; 0&#x3c;y1&#x2264;0.5; and &#x3b4; is an oxygen deficiency amount).

Method for producing cell structure

Provided is a solid electrolyte made of yttrium-doped barium zirconate having hydrogen ion conductivity, a doped amount of yttrium being 15 mol % to 20 mol %, and a rate of increase in lattice constant at 100&#xb0; C. to 1000&#xb0; C. with respect to temperature changes being substantially constant. Also provided is a method for manufacturing the solid electrolyte. This solid electrolyte can be formed as a thin film, and a solid electrolyte laminate can be obtained by laminating electrode layers on this solid electrolyte. This solid electrolyte can be applied to an intermediate temperature operating fuel cell.

Solid electrolyte, method for manufacturing solid electrolyte, solid electrolyte laminate, method for manufacturing solid electrolyte laminate, and fuel cell

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Kyoto, Japan

Donglin Han