Hydrogen absorbing alloy electrode
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsYuichi Hamada, Yoshihiro Kubota, Hiroto Sugahara
Life of this patent
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Abstract
Provided is a hydrogen absorbing alloy electrode having on a conductive support surface a hydrogen absorbing alloy layer which comprises a hydrogen absorbing alloy powder capable of absorbing and desorbing hydrogen electrochemically and a binder; with the hydrogen absorbing alloy layer having a surface coated spotwise with an amorphous water-repelling fluoropolymer at a total coverage of 0.001 mg/cm.sup.2 to 5 mg/cm.sup.2, wherein a solution of the fluoropolymer in a solvent having a boiling point of 50.degree.-110.degree. C. is spray-coated on the alloy layer surface.
Claims8
A hydrogen absorbing alloy electrode having on a conductive support surface a hydrogen absorbing alloy layer which comprises a hydrogen absorbing alloy powder capable of absorbing and desorbing hydrogen electrochemically and a binder;
- said hydrogen absorbing alloy layer having a surface coated spotwise with an amorphous water-repelling fluoropolymer at a total coverage of 0.001 mg/cm.sup.2 to 5 mg/cm.sup.2, wherein a solution of said fluoropolymer in an organic solvent having a boiling point of 50.degree.-110.degree. is spray-coated on the alloy layer surface;
- wherein said fluoropolymer is selected from the group consisting of perfluorobutenylvinyl ether polymers, perfluoroallylvinyl ether polymers and tetrafluoroethylene/perfluoro-2,2-dimethyl-1, 3-dioxol copolymers.
A hydrogen absorbing alloy electrode having on a conductive support surface a hydrogen absorbing alloy layer which comprises a hydrogen absorbing alloy powder capable of absorbing and desorbing hydrogen electrochemically and a binder, said hydrogen absorbing alloy layer having a surface coated spotwise with an amorphous solvent soluble water-repelling fluoropolymer at a total coverage of 0.001 mg/cm.sup.2 to 5 mg/cm.sup.2, wherein a solution of said solvent soluble fluoropolymer in a solvent having a boiling point of 50.degree.-110.degree. is spray-coated on the alloy layer surface;
- wherein said fluoropolymer is selected from the group consisting of perfluorobutenylvinyl ether polymers, perfluoroallylvinyl ether polymers and tetrafluoroethylene/perfluoro-2,2-dimethyl-1,3-dioxol copolymers.
Dependencies are inferred from the claim text.