SECONDARY BATTERY WITH HYDROXIDE-ION-CONDUCTING CERAMIC SEPARATOR

Title:

SECONDARY BATTERY WITH HYDROXIDE-ION-CONDUCTING CERAMIC SEPARATOR

Document Type and Number:

WIPO Patent Application WO/2016/084557

Kind Code:

A1

Abstract:

The present invention provides a secondary battery with a hydroxide-ion-conducting ceramic separator. This secondary battery comprises a positive electrode, a negative electrode, an alkaline electrolyte, a ceramic separator that separates the positive electrode and the negative electrode and that is made of an inorganic solid electrolytic body having hydroxide-ion conductivity, a porous substrate provided on at least one side of the ceramic separator, and a container for containing at least the negative electrode and the alkaline electrolyte, wherein the inorganic solid electrolytic body is in the form of a film or layer that is densified to a degree such that the inorganic solid electrolytic body does not have water permeability and wherein the thickness of the porous substrate is 100-1800 µm. With the secondary battery according to the present invention, a decrease in the energy density and an increase in the internal resistance can be advantageously inhibited, while realizing a low resistance by way of forming the ceramic separator as a thin film without the risk of a decrease in strength.

Inventors:

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

Application Number:

PCT/JP2015/080931

Publication Date:

June 02, 2016

Filing Date:

November 02, 2015

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)

International Classes:

H01M4/42; H01M4/52; H01M10/30; H01M12/04; H01M50/434; H01M50/449

Domestic Patent References:

WO2013118561A1	2013-08-15
WO2012036025A1	2012-03-22

Foreign References:

JP2014194897A	2014-10-09
JP2001500661A	2001-01-16
JP2003510791A	2003-03-18
JPH06196199A	1994-07-15
JP2012054039A	2012-03-15
JP2007516567A	2007-06-21

Other References: