The exploration of cost-effective and highly efficient electrocatalysts for the hydrogen evolution reaction (HER) is of great significance for realizing sustainable H₂ production. As previously proposed, anion incorporation in promising earth-abundant transition metal-based electrocatalysts could be a reasonable and competitive approach to regulate the electronic structure with optimized atomic hydrogen adsorption and desorption for enhanced intrinsic electrocatalytic performance during the HER. Herein, we present the rational design and fabrication of O-incorporated CoP (expressed as O-CoP) nanorods with a controllable component and electronic structure. As demonstrated, when the lattice-incorporated O is at an appropriate concentration, the engineered O-CoP nanocatalysts have more active sites exposed with an increased number of electrochemically active areas and better electron/ion conductivity, leading to boosted HER activity and running stability. Typically, the obtained O-CoP nanorods with an optimal oxygen content exhibit excellent HER activity with an overpotential of 116 mV at a current density of 10 mA cm⁻² and a small Tafel slope of 59 mV dec⁻¹ in alkaline media. This anion doping strategy may make a widespread contribution to the efficient engineering of electrocatalysts for energy conversion devices.

中文翻译：

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CoP纳米棒的电子结构调节通过可调节的氧掺入来在氢释放反应过程中增强电催化活性。

探索用于氢气释放反应（HER）的经济高效的电催化剂对于实现可持续的H ₂具有重要意义。生产。如先前提出的，将阴离子掺入有前途的富含地球的过渡金属基电催化剂中可能是一种合理且具有竞争性的方法，可通过优化的原子氢吸附和解吸来调节电子结构，以增强HER期间的固有电催化性能。在这里，我们介绍具有可控的成分和电子结构的掺O的CoP（表示为O-CoP）纳米棒的合理设计和制造。如证明的那样，当掺入晶格的O处于适当的浓度时，工程化的O-CoP纳米催化剂具有更多的活性位点，其暴露的电化学活性区数量增加并且电子/离子电导率提高，从而导致HER活性和运行稳定性提高。通常，^-2和在碱性介质中的59 mV dec ^-1的小Tafel斜率。这种阴离子掺杂策略可以为能量转换装置的电催化剂的有效工程化做出广泛的贡献。