Alloying and interface effects endow supported PtRuCo nanochains with 70 000-cycle stability in hydrogen evolution under neutral conditions

Abstract

A series of ultrasmall-PtRuCo-cluster-assembled nanochains supported on hollow N-doped Mo₂C “nanoflower” catalysts was successfully synthesized. Owing to the alloying and interface effects, the optimized Pt_0.5Ru_0.22Co_0.28/Mo₂C achieves an ultralow overpotential (24 mV@10 mA cm⁻²) and ultralong cycling life (70 000 cycles) in neutral media.