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1. WO2002023654 - SEPARATOR FOR LOW-TEMPERATURE TYPE FUEL CELL AND PRODUCTION METHOD THEREFOR

Publication Number WO/2002/023654
Publication Date 21.03.2002
International Application No. PCT/JP2001/007783
International Filing Date 07.09.2001
Chapter 2 Demand Filed 03.04.2002
IPC
H01M 8/02 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
CPC
C25F 3/06
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
FPROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
3Electrolytic etching or polishing
02Etching
06of iron or steel
H01M 8/021
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
0204Non-porous and characterised by the material
0206Metals or alloys
0208Alloys
021Alloys based on iron
Y02E 60/50
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
30Hydrogen technology
50Fuel cells
Y02P 70/50
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
70Climate change mitigation technologies in the production process for final industrial or consumer products
50Manufacturing or production processes characterised by the final manufactured product
Y10T 29/49115
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
29Metal working
49Method of mechanical manufacture
49002Electrical device making
49108Electric battery cell making
49115including coating or impregnating
Y10T 428/12389
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
12All metal or with adjacent metals
12389having variation in thickness
Applicants
  • NISSHIN STEEL CO., LTD. [JP]/[JP] (AllExceptUS)
  • MIYANO, Tsutomu [JP]/[JP] (UsOnly)
  • SHIMIZU, Takeshi [JP]/[JP] (UsOnly)
  • IZUMI, Keiji [JP]/[JP] (UsOnly)
  • MORITA, Yoshikazu [JP]/[JP] (UsOnly)
  • KAMOSHIDA, Shinichi [JP]/[JP] (UsOnly)
  • KINGETSU, Toshiki [JP]/[JP] (UsOnly)
Inventors
  • MIYANO, Tsutomu
  • SHIMIZU, Takeshi
  • IZUMI, Keiji
  • MORITA, Yoshikazu
  • KAMOSHIDA, Shinichi
  • KINGETSU, Toshiki
Agents
  • OGURA, Wataru
Priority Data
2000-27689312.09.2000JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SEPARATOR FOR LOW-TEMPERATURE TYPE FUEL CELL AND PRODUCTION METHOD THEREFOR
(FR) SEPARATEUR POUR PILE A COMBUSTIBLE DE TYPE A BASSE TEMPERATURE ET PROCEDE DE FABRICATION ASSOCIE
Abstract
(EN)
A stainless steel sheet used for a separator substrate has a surface configuration in which many fine pits (d) are formed throughout the entire surface thereof with fine projections (p) thickly grown at the peripheral edges of the pits (d). This surface configuration is formed by dipping the stainless steel sheet in a ferric chloride solution for alternate electrolytic etching. The separator substrate assembled into a fuel cell will provide a fuel cell having a low contact resistance with a carbon electrode and being capable of keeping a high power generating efficiency over an extended time even under a condition it is exposed to a rigorous corroding atmosphere.
(FR)
L'invention concerne une feuille en acier inoxydable utilisée pour le substrat d'un séparateur, laquelle feuille présente une configuration de surface dans laquelle sont ménagées plusieurs micro-cuvettes (d) fines sur toute la surface, des projections (p) fines étant formées dans l'épaisseur sur les arêtes périphériques des micro-cuvettes (d). Cette configuration est formée par trempage de la feuille en acier inoxydable dans une solution de chlorure ferrique de manière à être soumise à une photogravure électrolytique alternée. Le substrat intercalaire assemblé dans une pile à combustible permet d'obtenir une pile à combustible présentant une résistance de contact faible avec une électrode carbone et il est conçu pour conserver une puissance élevée produisant un rendement durant un temps assez long même dans des conditions dans lesquelles il est exposé à une atmosphère extrêmement corrosive.
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