EP 1716614 A1 20061102 - MEMBRANES FOR FUEL CELLS, METHOD FOR PRODUCING SAID MEMBRANES AND PRODUCTION OF FUEL CELLS USING MEMBRANES OF THIS TYPE
Title (en)
MEMBRANES FOR FUEL CELLS, METHOD FOR PRODUCING SAID MEMBRANES AND PRODUCTION OF FUEL CELLS USING MEMBRANES OF THIS TYPE
Title (de)
MEMBRANEN FÜR BRENNSTOFFZELLEN, VERFAHREN ZUR HERSTELLUNG DER MEMBRANEN UND BRENNSTOFFZELLEN UNTER VERWENDUNG DERARTIGER MEMBRANEN
Title (fr)
MEMBRANES POUR PILES A COMBUSTIBLE, PROCEDE POUR PRODUIRE DE TELLES MEMBRANES ET POUR PRODUIRE DES PILES A COMBUSTIBLES EN UTILISANT DE TELLES MEMBRANES
Publication
Application
Priority
- EP 2005000838 W 20050128
- DE 102004005389 A 20040204
Abstract (en)
[origin: WO2005076401A1] The invention relates to membranes for fuel cells, which are characterised by a homogeneous absorption and good retention of doping agents and which guarantee a high mechanical stability at high temperatures when doped. Said membranes consist of at least one polymer, whose nitrogen atoms are chemically bonded to a central atom of a derivative of a polybasic inorganic oxo acid. The membranes are produced from polymer solutions that are devoid of water and oxo acid derivatives, by heating the solution that has been introduced into a membrane mould until a self-supporting membrane has been formed and then by tempering the latter. Inventive fuel cells consisting of a membrane electrode assembly (MEA) that comprises an inventive membrane and phosphoric acid as the doping agent have, for example, an impedance of 0.5-1 ohmcm<2> at a measuring frequency of 1000 Hz and at an operating temperature of 160° C and a gas flow for hydrogen of 170 ml/min and for air of 570 ml/min. They can be used as high-temperature polyelectrolyte membrane fuel cells for a working temperature of up to at least 250° C.
IPC 8 full level
H01M 8/10 (2006.01); B01D 71/58 (2006.01); C08J 5/22 (2006.01); H01M 8/02 (2006.01)
CPC (source: EP US)
B01D 71/56 (2013.01 - EP); B01D 71/58 (2013.01 - EP US); C08G 73/18 (2013.01 - EP); C08J 5/22 (2013.01 - US); C08J 5/2256 (2013.01 - EP); H01M 8/02 (2013.01 - US); H01M 8/10 (2013.01 - US); H01M 8/1023 (2013.01 - EP); H01M 8/1027 (2013.01 - EP); H01M 8/103 (2013.01 - EP); H01M 8/1032 (2013.01 - EP); H01M 8/1048 (2013.01 - EP); H01M 8/1072 (2013.01 - EP); C08J 2379/06 (2013.01 - EP); H01M 2008/1095 (2013.01 - EP); H01M 2300/0082 (2013.01 - EP); Y02E 60/50 (2013.01 - EP); Y02P 70/50 (2015.11 - EP US)
Citation (search report)
See references of WO 2005076401A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 202005001541 U1 20050331; CN 1918739 A 20070221; DE 102004005389 A1 20050825; EP 1716614 A1 20061102; JP 2007522615 A 20070809; US 2007003808 A1 20070104; US 7682723 B2 20100323; WO 2005076401 A1 20050818
DOCDB simple family (application)
DE 202005001541 U 20050201; CN 200580004109 A 20050128; DE 102004005389 A 20040204; EP 05715219 A 20050128; EP 2005000838 W 20050128; JP 2006551774 A 20050128; US 49873006 A 20060804