HYDROGEN PRODUCTION SYSTEM

Title:

HYDROGEN PRODUCTION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2012/043085

Kind Code:

A1

Abstract:

A hydrogen production apparatus which is provided an electrode pair consisting of a hydrogen electrode and an oxygen electrode, a dividing wall sandwiched between the hydrogen electrode and the oxygen electrode, and a tank that contains the electrode pair, the dividing wall and an aqueous solution of an electrolyte, and which generates hydrogen by electrolyzing the aqueous solution of an electrolyte by means of the electrode pair. The hydrogen production device is characterized in that the oxygen electrode contains an oxide or hydroxide of a metal and the specific surface area of the oxygen electrode is greater than that of the hydrogen electrode. With this configuration, hydrogen is generated at the hydrogen electrode through a reduction reaction of water and a charge and discharge reaction occurs at the oxygen electrode. Because it is thereby possible to maintain the potential at the oxygen electrode at a certain value or higher in the hydrogen production apparatus, it is possible to suppress deterioration of the electrodes caused by an oxidation reaction and it is possible to improve response to fluctuations in input power caused by using renewable energy and to improve reliability.

Inventors:

SUGIMASA MASATOSHI (JP)

Application Number:

PCT/JP2011/068653

Publication Date:

April 05, 2012

Filing Date:

August 18, 2011

Export Citation:

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Assignee:

HITACHI LTD (JP)
SUGIMASA MASATOSHI (JP)

International Classes:

C25B5/00; C25B9/19

Foreign References:

JP2002231267A	2002-08-16
JPH06212471A	1994-08-02
JP2006236741A	2006-09-07

Other References: