Carbon-Free Pt Electrocatalysts Supported on SnO[sub 2] for Polymer Electrolyte Fuel Cells

Carbon-free Pt-based electrocatalysts supported on semiconducting have been developed for polymer electrolyte fuel cells (PEFCs) by various electrochemical and microstructural characterizations. exhibited comparable current–voltage characteristics to conventional Pt electrocatalysts and, in particular, a considerable tolerance against 10,000 cycles of voltages up to 0.9 and (RHE denotes reversible hydrogen electrode) vs the RHE. These results indicate that the carbon-free oxide-supported can be a promising alternative electrocatalyst with long-term durability against voltage cycling up to higher potentials, as a possible fundamental solution to the PEFC degradation caused by carbon support corrosion.