Mn boosted the electrocatalytic hydrogen evolution of N, P co-doped Mo2C via synergistically tuning the electronic structures†
Molybdenum carbide (Mo2C) is a promising candidate to replace Pt for highly efficient hydrogen evolution reaction (HER). The heteroatom doping strategy is feasible to tune the electronic structures of Mo2C for attaining desirable Mo–H bonding strength. In response, a Mn dopant is proposed to synergistically tune the electronic structures of N, P co-doped Mo2C (denoted as NP-Mo2C), and an optimal |ΔGH*| of active sites can be obtained, thus leading to prominent catalytic performances for the HER with a small Tafel slope of 51 mV dec−1. Moreover, the enhanced HER properties should be attributed to lower electrochemical resistance and better intrinsic activity. This work proposes a convenient approach to design low-cost and high-performance electrocatalysts via heteroatom doping.
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