Abstract
The design of advanced supports to boost the oxygen reduction reaction (ORR) in acidic media is of great significance for proton exchange membrane fuel cells. Herein, TiC@TiO2‐C supports are prepared by the sol–gel method coupled with high‐temperature annealing. The obtained Pt/TiC@TiO2‐C catalyst exhibits outstanding ORR activity such as the half‐wave potential of 0.84 VRHE as well as strong electrochemical stability in 0.1 m HClO4 electrolyte, surpassing the Pt/TiO2‐C and Pt/C catalyst. This result is attributed to the electron transfer from the support to Pt nanoparticles accelerated by the TiC core, which optimizes the electronic structure of Pt to boost the ORR.
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