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US 8,945,736 B2Granted
Method for conditioning membrane-electrode-units for fuel cells
AssigneeBASF Fuel Cell GmbH
InventorsOemer Uensal, Joachim Kiefer, Isabel Kundler, Mathias Weber, Christoph Padberg, Thomas Schmidt, Jochen Baurmeister, Gordon Calundann, Glen Hoppes
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Abstract
The present invention relates to a method for the conditioning of membrane electrode assemblies for fuel cells in which the output of the membrane electrode assemblies used can be increased and therefore the efficiency of the resulting polymer electrolyte membrane fuel cells can be improved.
Claims19
A method for conditioning a membrane electrode assembly wherein the membrane electrode assembly comprises
- A) at least one polymer electrolyte matrix in the form of a membrane containing at least one oxo acid of phosphorus and/or sulphur and at least one polymer with at least one heteroatom selected from the group of nitrogen, oxygen and/or sulphur and wherein said at least one polymer electrolyte matrix in the form of a membrane has a proton conductivity of at least 0.1 S/cm @ temperatures of 120° C.;
- and
- B) at least two electrodes;
- which comprises laminating the polymer matrix and the electrodes to form a membrane electrode assembly and conditioning in a temperature range of 100° C. to 300° C. after the lamination and wherein the conditioning is performed under substantially currentless conditions.
1 more element
Dependencies are inferred from the claim text.