Global Patent Index - EP 1055018 A1

EP 1055018 A1 2000-11-29 - ASYMMETRIC ELECTRODES FOR DIRECT-FEED FUEL CELLS

Title (en)

ASYMMETRIC ELECTRODES FOR DIRECT-FEED FUEL CELLS

Title (de)

ASYMETRISCHE ELEKTRODEN FÜR DIREKTGESPEISTE BRENNSTOFFZELLEN

Title (fr)

ELECTRODES ASYMETRIQUES POUR PILES A COMBUSTIBLE A ALIMENTATION DIRECTE

Publication

EP 1055018 A1 (EN)

Application

EP 99906802 A

Priority

  • US 9902677 W
  • US 2164098 A

Abstract (en)

[origin: WO9940237A1] An improved direct-feed fuel cell having a solid membrane electrolyte (120) for electrochemical reactions of an organic fuel. Fuel crossover has been reduced due to pore structures blockage at the electrode-membrane interfaces (230, 270) of the membrane electrode assembly (160). Two improved MEA's are disclosed. One utilizes a multi-layer catalyst formation with a densest catalyst layer (220, 260) applied at the electrode-catalyst interfaces (230, 270). Another utilizes an inert pore blocking layer (320, 340) at the electrode-membrane interfaces (230, 270).

IPC 1-7 (main, further and additional classification)

C25B 9/10; H01M 4/86; H01M 8/10

IPC 8 full level (invention and additional information)

C25B 9/10 (2006.01); H01M 4/86 (2006.01); H01M 8/10 (2006.01)

CPC (invention and additional information)

H01M 4/8605 (2013.01); C25B 9/10 (2013.01); H01M 8/1004 (2013.01); H01M 8/1009 (2013.01)

Designated contracting state (EPC)

DE FR GB NL

EPO simple patent family

WO 9940237 A1 19990812; WO 9940237 A9 19991021; AU 2662699 A 19990823; EP 1055018 A1 20001129; EP 1055018 A4 20040811

INPADOC legal status


2010-02-24 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20090829

2006-09-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20050315

2005-04-27 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20050315

2004-08-11 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20040624

2004-05-12 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7C 25B 9/10 A

2004-05-12 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7H 01M 8/10 B

2004-05-12 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7H 01M 4/86 B

2000-12-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000907

2000-11-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB NL