▎ 摘　　要

Developing efficient electrocatalysts for the oxygen reduction reaction (ORR) based on non-precious catalytic centers is critical to improve the efficiency of low temperature fuel cells. Herein, we report on a catalyst containing CoSe2 supported on selenium decorated reduced graphene oxide (CoSe2/Se-rGO), which was synthesized via a one-pot solvothermal method using Se-rGO as support. Importantly, the CoSe2/Se-rGO showed an enhanced catalytic activity for ORR in alkaline medium with an onset potential of 0.903 V vs. RHE and a half-wave potential of 0.803 V vs. RHE. Its stability and methanol tolerance ability were significantly improved as compared to 20 wt% Pt/C, respectively. The strategy developed here provided a novel and efficient approach to prepare non-precious electrocatalysts for ORR.