Hydrogen production from water driven by electrochemical/solar energy is extremely desirable, but it requires a capable and robust electrocatalyst for the hydrogen evolution reaction (HER). For the aforesaid purpose, molybdenum carbide (Mo₂C) has been considered as an efficient electrocatalyst for hydrogen production; however, N‐Mo₂C has been less focused upon. For this purpose, we report a facile method for the synthesis of N‐Mo₂C active species. The as‐synthesized electrocatalyst exhibits a remarkable electrochemical performance for HER with a small onset potential of 30.6 mV vs. RHE and requires overpotential (η) of only 99.3 mV vs. RHE to render −10 mA cm⁻² current density. The Tafel slope of 62.8 mV dec⁻¹ further demonstrates the favorable reaction kinetics of the electrocatalyst. Moreover, for practical applications, solar‐driven hydrogen production has been efficiently implemented, which shows excellent faradaic efficiency (95.2 %) as well as solar‐to‐hydrogen generation efficiency (1.14 %). This facile approach for the synthesis of N‐Mo₂C active species can provide valuable enlightenment for the further development of photo‐/electrocatalysts.

中文翻译：

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新型N‐Mo2C活跃站点，可高效产生太阳能到氢

由电化学/太阳能驱动的水制氢是非常需要的，但是它需要用于氢析出反应（HER）的功能强大的电催化剂。为了上述目的，碳化钼（Mo ₂ C）被认为是生产氢气的有效电催化剂。但是，N-Mo ₂ C的关注度较低。为此，我们报告了一种合成N-Mo ₂ C活性物质的简便方法。合成的电催化剂对HER表现出卓越的电化学性能，相对于RHE的启动电位小，为30.6 mV，对于RHE而言，仅需要99.3 mV的过电位（η）就可产生-10 mA cm ^-2的电流密度。Tafel斜率下降62.8 mV^-1进一步证明了电催化剂的有利的反应动力学。此外，在实际应用中，太阳能驱动的制氢已得到有效实施，其法拉第效率（95.2％）和太阳能制氢效率（1.14％）都非常出色。这种简便的合成N-Mo ₂ C活性物质的方法可以为光/电催化剂的进一步发展提供有价值的启示。