EP 1328987 A2 20030723 - METHOD FOR OPERATING A FUEL CELL, POLYMER-ELECTROLYTE MEMBRANE FUEL CELL OPERATED ACCORDING TO SAID METHOD AND METHOD FOR PRODUCING THE SAME
Title (en)
METHOD FOR OPERATING A FUEL CELL, POLYMER-ELECTROLYTE MEMBRANE FUEL CELL OPERATED ACCORDING TO SAID METHOD AND METHOD FOR PRODUCING THE SAME
Title (de)
BETRIEBSVERFAHREN FÜR EINE BRENNSTOFFZELLE, DAMIT ARBEITENDE POLYMER-ELEKTROLYT-MEMBRAN-BRENNSTOFFZELLE UND VERFAHREN ZU DEREN HERSTELLUNG
Title (fr)
PROCEDE D'EXPLOITATION D'UNE PILE A COMBUSTIBLE, PILE A COMBUSTIBLE A MEMBRANE ELECTROLYTIQUE POLYMERE MISE EN OEUVRE ET SON PROCEDE DE FABRICATION
Publication
Application
Priority
- DE 0103574 W 20010917
- DE 10048423 A 20000929
Abstract (en)
[origin: WO0227837A2] The invention relates to a method for operating a polymer-electrolyte membrane (PEM) fuel cell. When operating known polymer electrolyte membrane fuel cells it has to be made sure that especially the phosphoric acid does not directly contact the metal bipolar plate of the fuel cell at high temperatures. In order to avoid such a contact, a sufficiently electroconducting intermediate layer (10, 20) is interposed between the membrane electrode unit (1) and the bipolar plate (3) of the fuel cell, which prevents phosphoric acid or a mixture of phosphoric acid and water that may escape from the membrane-electrode unit (1) from reaching the bipolar plate (3). For producing the fuel cell according to the invention an at least two-layer stratified structure (10, 20) is introduced which becomes more hydrophobic and more finely pored with increasing proximity to the bipolar plate (3).
IPC 1-7
IPC 8 full level
H01M 8/02 (2006.01); H01M 8/0234 (2016.01); H01M 8/0245 (2016.01); H01M 8/0267 (2016.01); H01M 8/10 (2006.01); H01M 8/1007 (2016.01); H01M 8/24 (2006.01); H01M 8/241 (2016.01)
CPC (source: EP US)
H01M 8/0234 (2013.01 - EP US); H01M 8/0245 (2013.01 - EP US); H01M 8/0267 (2013.01 - EP US); H01M 8/1007 (2016.02 - EP US); H01M 8/2425 (2013.01 - US); H01M 8/2432 (2016.02 - EP); H01M 8/2459 (2016.02 - US); Y02E 60/50 (2013.01 - EP)
Citation (search report)
See references of WO 0227837A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0227837 A2 20020404; WO 0227837 A3 20021121; CA 2423864 A1 20030327; CN 1511353 A 20040707; DE 10048423 A1 20020418; EP 1328987 A2 20030723; JP 2004510317 A 20040402; US 2003170509 A1 20030911
DOCDB simple family (application)
DE 0103574 W 20010917; CA 2423864 A 20010917; CN 01816309 A 20010917; DE 10048423 A 20000929; EP 01982119 A 20010917; JP 2002531531 A 20010917; US 40386003 A 20030331