| abstract |
The invention relates to a fuel cell (10) or an electrolyser, comprising at least one electrode (1) and at least one polymer electrolyte membrane (7), the electrode (1) comprising a catalyst system (9) comprising a substrate metal oxide and a catalyst material, the catalyst material being formed by an electrically conductive metal phosphate in the form of a metaphosphate of the general chemical formula Mez n+2(PnO3n+1)z, where Me = metal, z = valency of the metal Me, and n is within the range of 1 to 10. |