Katalysatorlag til polymerelektrolytbrændselsceller

摘要

A catalytic ink comprises a dispersion of carbon particles and an organic noble metal complex in a solution of ionomer. A catalytic layer (I) on a substrate material (II) containing a proton conducting polymer (ionomer), electrically conductive carbon particles and fine particles of at least a noble metal is prepared by coating the substrate material with an ink (III). The ink (III) comprises a dispersion of carbon particles and at least on organic noble metal complex in a solution of the ionomer. The coating is dried such that the ionomer and substrate are not damaged and the complex is decomposed to form finely divided noble metal particles in an oxidation state of 0. Independent claims are included for: (i) The ink (III); (ii) a process for the production of (I) on (II) by application of (III); and (iii) drying a gas diffusion electrode for a polymer electrolyte fuel cell whereby the substrate (II) is a gas distribution structure.