ELECTRODE FOR ELECTROLYSIS, METHOD FOR PRODUCING SAME, AND ELECTROLYSIS APPARATUS

Title:

ELECTRODE FOR ELECTROLYSIS, METHOD FOR PRODUCING SAME, AND ELECTROLYSIS APPARATUS

Document Type and Number:

WIPO Patent Application WO/2013/005252

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide: an oxygen electrode for electrolysis of water, which uses oxide of a base metal; and a method for producing the oxygen electrode. The present invention is an electrode for electrolysis (201) which produces hydrogen by electrolyzing an electrolyte solution. The electrode for electrolysis (201) is characterized by being provided with a conductive substrate (204), a base metal oxide (203) that is formed on the surface of the substrate, and a noble metal (202) that is supported by the surface of the base metal oxide (203). The electrode for electrolysis (201) is also characterized in that the noble metal (202) is composed of one or more substances selected from among Au, Ag and oxides of Au and Ag. This configuration enables the production of an electrode that is obtained by combining a slight amount of a noble metal with oxide of a base metal that is rich in the resource reserve. Consequently, an oxygen electrode for electrolysis of water, which has corrosion resistance and low overvoltage, can be provided regardless of the reserves of resources by this technique.

Inventors:

SUGIMASA MASATOSHI (JP)

Application Number:

PCT/JP2011/003848

Publication Date:

January 10, 2013

Filing Date:

July 06, 2011

Export Citation:

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Assignee:

HITACHI LTD (JP)
SUGIMASA MASATOSHI (JP)

International Classes:

C25B11/08; C25B1/04; C25B9/00; C25B11/04

Foreign References:

JPH01176086A	1989-07-12
JPS57198280A	1982-12-04
JP2007046130A	2007-02-22
JPH06101083A	1994-04-12
JPS62500459A	1987-02-26

Other References: