ARTIFICIAL PHOTOSYNTHESIS MODULE

Title:

ARTIFICIAL PHOTOSYNTHESIS MODULE

Document Type and Number:

Japanese Patent JP2015113520

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide an artificial photosynthesis module capable of regulating the voltage (electrolysis start voltage) required for electrolysis of water for reduction of surplus power when using a photoelectric conversion element for electrolysis by receiving light.SOLUTION: An artificial photosynthesis module 10, which decomposes an aqueous electrolyte solution into hydrogen and oxygen by means of light, comprises: a photoelectric conversion unit 12 which receives light and generates electric power; a hydrogen gas generation part 32 which decomposes the aqueous electrolyte solution using the electric power of the photoelectric conversion unit and generates hydrogen gas; and an oxygen gas generation part 34 which decomposes the aqueous electrolyte solution using the electric power of the photoelectric conversion unit and generates oxygen gas. The photoelectric conversion unit 12, the hydrogen gas generation part 32, and the oxygen gas generation part 34 are electrically connected in series. The hydrogen gas generation part 32 and the oxygen gas generation part 34 are arranged within an electrolysis chamber 14 to which the aqueous electrolyte solution is supplied. The hydrogen gas generation part 32 comprises an inorganic semiconductor film having a pn junction.

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Inventors:

SATO HISATOSHI
DOMEN KAZUNARI
TSUKAHARA JIRO

Application Number:

JP2013258541A

Publication Date:

June 22, 2015

Filing Date:

December 13, 2013

Export Citation:

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Assignee:

FUJIFILM CORP
JAPAN TECHNOLOGICAL RES ASS OF ARTIFICIAL PHOTOSYNTHETIC CHEMICAL PROCESS
UNIV TOKYO

International Classes:

C25B9/19; H01L31/042; H01L31/06

Domestic Patent References:

JP2012072434A	2012-04-12
JP2005133174A	2005-05-26
JP2013105631A	2013-05-30
JP2007239048A	2007-09-20
JPH08125210A	1996-05-17
JP2008507464A	2008-03-13

Other References:

DAISUKE YOKOYAMA ET AL.: "H2 Evolution from Water on Modified Cu2ZnSnS4 Photoelectrode under Solar Light", APPLIED PHYSICS EXPRESS, vol. 3, no. 10, JPN6014024469, October 2010 (2010-10-01), pages 101202 - 1, ISSN: 0003488907

Attorney, Agent or Firm:

Nozomi Watanabe
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi

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