Title:
HIGH-PRESSURE HYDROGEN PRODUCING APPARATUS AND PRODUCING METHOD
Document Type and Number:
WIPO Patent Application WO/2003/064727
Kind Code:
A1
Abstract:
An apparatus and method for producing high-pressure hydrogen only by water electrolysis stably, efficiently, and safely even with power generated by natural energy such as sunshine without using a gas compressor. In the apparatus, a water-electrolysis cell using a solid polymer electrolytic membrane, particularly a bipolar stacked water-electrolysis cell having a specific structure, is placed in a high-pressure vessel in a hydrogen atmosphere containing generated hydrogen, preferably cooled hydrogen. Pure water is electrolyzed to produce hydrogen by this water-electrolysis cell while suppressing the pressure exerted on the water-electrolysis cell below the withstand pressure by using a differential pressure sensor and a pressure regulator, thereby producing high-pressure hydrogen.
Inventors:
HARADA HIROYUKI
Application Number:
PCT/JP2003/000319
Publication Date:
August 07, 2003
Filing Date:
January 16, 2003
Export Citation:
Assignee:
MITSUBISHI CORP (JP)
International Classes:
C01B3/02; C25B9/17; C25B15/08; (IPC1-7): C25B1/12; C25B9/00; C25B11/02; C25B15/02; C01B3/02
Foreign References:
| EP0806498A1 | 1997-11-12 | |||
| JPH09291386A | 1997-11-11 | |||
| JPH09157878A | 1997-06-17 |
Other References:
See also references of EP 1473386A4
Attorney, Agent or Firm:
Kohda, Masahiro (Nakamura Building 5th. Fl. 24-11, Shinbashi 4-chom, Minato-ku Tokyo, JP)
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