ZINC-AIR SECONDARY BATTERY - NGK INSULATORS LTD

Title:

ZINC-AIR SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2016/088673

Kind Code:

A1

Abstract:

Disclosed is a zinc-air secondary battery which is provided with: an air electrode which serves as a positive electrode; a negative electrode which contains zinc, a zinc alloy and/or a zinc compound; an aqueous electrolyte solution into which the negative electrode is immersed; a container which has an opening and contains the negative electrode and the electrolyte solution; and a separator which closes the opening in such a manner that the separator is able to be in contact with the electrolyte solution, thereby forming a sealed space together with the container, and which accordingly separates the air electrode and the electrolyte solution from each other in a hydroxide ion conductive manner, while having hydroxide ion conductivity but not having water permeability nor air permeability. This battery has a volumetric extra space that allows increase/decrease of the water content in the sealed space, said increase/decrease of the water content accompanying a negative electrode reaction during charging and discharging. The present invention is able to provide a highly reliable zinc-air secondary battery which uses a separator that has hydroxide ion conductivity but does not have water permeability nor air permeability.

Inventors:

HAYASHI HIROSHI (JP)
YAMADA NAOHITO (JP)
KITOH KENSHIN (JP)

Application Number:

PCT/JP2015/083390

Publication Date:

June 09, 2016

Filing Date:

November 27, 2015

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)

International Classes:

H01M12/08; H01M4/86; H01M50/431; H01M50/443; H01M50/449; H01M50/451; H01M50/457; H01M50/489; H01M50/103; H01M50/463

Foreign References:

JPH10189064A	1998-07-21
JP2008541395A	2008-11-20
JP2011243364A	2011-12-01
JP2009199797A	2009-09-03
JPS363409B1

Other References: