Solid electrolyte with high ion conductivity and...

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H01M 8/10 (2006.01) C25B 13/04 (2006.01) H01M 8/02 (2006.01) H01M 6/18 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2418705

It is an object to provide a high ion conductive solid electrolyte which uses organic and inorganic complex compound having water absorption and water resistance and to provide an electrochemical system using the high ion conductive solid electrolyte. The high ion conductive solid electrolyte is composed of a complex compound including water that has zirconic acid compound and polyvinyl alcohol. An aqueous solution in which zirconium salt or oxyzirconnium salt and polyvinyl alcohol are dissolved is neutralized by alkali. After removing water used as solvent, unnecessary salts are removed from the neutralized solution. The high ion conductive solid electrolyte is obtained which is composed of the complex compound having zirconic acid compound, polyvinyl alcohol, and water. Various electrochemical systems are obtained each of which use the high ion conductive solid electrolyte.

Il s'agit de fournir un électrolyte solide possédant une conductivité ionique élevée, faisant appel à un complexe inorganique et organique ayant une forte capacité d'absorption de l'eau et une grande résistance à l'eau, et de fournir un système électrochimique dans lequel cet électrolyte solide est employé. L'électrolyte solide à forte conductivité ionique est formé d'un complexe comprenant de l'eau, de l'acide zirconique et un alcool polyvinylique. Une solution aqueuse dans laquelle sont dissous le sel de zirconium ou le sel d'oxyzirconium et l'alcool polyvinylique est neutralisée par un alcali. Après retrait de l'eau utilisée comme solvant, les sels superflus sont éliminés de la solution neutralisée. L'électrolyte solide à forte conductivité ionique est obtenu; il est formé d'un complexe renfermant le composé d'acide zirconique, l'alcool polyvinylique et l'eau. Divers systèmes électrochimiques sont obtenus, chacun faisant appel à l'électrolyte solide à forte conductivité ionique.

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