Solid electrolyte with high ion-conductivity and method for manufacturing the same, and electrochemical system using solid electrolyte

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United States of America Patent

PATENT NO 7951494
APP PUB NO 20090068531A1
SERIAL NO

12165860

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Abstract

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The present invention provides a solid electrolyte with high ion-conductivity which is cheap and exhibits high conductivity in an alkaline form, and stably keeps high conductivity because of a small amount of the leak of a compound bearing conductivity even in a wet state. The invention is useful in an electrochemical system using the solid electrolyte, such as a fuel cell.The solid electrolyte with high ion-conductivity comprises a hybrid compound which contains at least polyvinyl alcohol and a zirconic acid compound, and also a nitrogen-containing organic compound having a structure of amine, quaternary ammonium compound and/or imine, obtained by hydrolyzing a zirconium salt or an oxyzirconium salt in a solution including water, polyvinyl alcohol, a zirconium salt or an oxyzirconium salt and a nitrogen-containing organic compound having a structure of amine, quaternary ammonium compound and/or imine coexist, removing a solvent and contacting with alkali.

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHA1 TOYOTA-CHO TOYOTA-SHI AICHI 4718571 ?4718571
NIPPON KODOSHI CORPORATIONKOCHI-SHI KOCHI 781-0395

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsumoto, Shinichi Toyota, JP 162 2044
Nakanishi, Haruyuki Toyota, JP 79 470
Sawa, Haruo Kochi, JP 19 121

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