Honda Motor Co., Ltd.

Shohei Yoshida

Satoshi Hasegawa

Shigeto Akahori

Satoshi Yonezawa

Hiroshi Kurata

Mai Yokoi

Keiichi Shiraishi

Tomoko Tamai

Koya Shimada

Shuga Ikeda

Provided is a secondary battery electrode having a sufficient peel strength between a base material and a material mixture layer without the need for increasing a binder addition amount. A secondary battery electrode includes a base material and a material mixture layer made of an electrode material mixture containing an active material and a binder. The material mixture layer has a multilayer structure of at least two or more layers stacked on the base material. In the multilayer structure of the material mixture layer, a first material mixture layer stacked on a surface of the base material has a higher contained binder concentration than those of other material mixture layers. The thickness of the first material mixture layer is preferably equal to or less than the total thickness of the other material mixture layers.

Secondary battery electrode, solid-state battery including the same, and secondary battery electrode manufacturing method

A method for inspecting a membrane electrode structure () which includes a first step in which detection medium capable of detecting elements of a first electrode catalyst layer () and a second electrode catalyst layer () and an element of a metal foreign matter () is sent along a thickness direction from the side of a first electrode layer () to a second electrode layer () side to obtain a thickness direction profile of a detection signal, and a second step in which an analysis unit identifies a thickness direction position of the metal foreign matter (), from intensity of the detection signal in the thickness direction profile, and in which the analysis unit identifies thickness direction positions of the first and second electrode catalyst layer ()(), or a thickness direction position of an electrolyte membrane (), from the intensity of the detection signal in the thickness direction profile.

Method for inspecting membrane electrode structure

An electrolyte membrane thickness measurement apparatus includes a detecting medium supplying portion configured to emit a detecting medium, a detecting portion configured to detect a metal catalyst, and an analyzing unit. A thickness direction profile of a detection signal is generated by the detecting portion, and first and second inflection points are determined in the thickness direction profile based on the intensity of the detection signal by the analyzing unit. The distance between the first and second inflection points is evaluated as the thickness of the electrolyte membrane by the analyzing unit.

Method and apparatus for measuring thickness of electrolyte membrane

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Tochigi-ken, Japan

Shohei Yoshida