Nonalloyed carbon-supported PtRu catalysts for PEMFC applications
- Papageorgopoulos, D.C.
- De Heer, M.P.
- Keijzer, M.
- Pieterse, J.A.Z.
- de Bruijn, F. A.
DOIAbstract
PtRu(1:1)/C catalysts were prepared by a process that was claimed previously to lead to non-alloyed Pt and Ru particles, using two different precursors, Ru nitrosyl nitrate and Ru chloride hydrate. Both X-ray diffraction and characterization by cyclic voltammetry point toward Pt and Ru being present as separate phases in the prepared, non-annealed catalysts. In combination with a high dispersion, this results in proton exchange membrane fuel cell (PEMFC) anode electrocatalysts. These PEMFCs have improved hydrogen oxidation activity and CO tolerance
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