The effect of ion irradiation on the activation and conductivity of the basal plane of 2H-phase WS₂ remains elusive for the enhancement of hydrogen evolution reaction (HER) properties. The objective of this study is to increase the number of electrocatalytic active sites by creating multi-vacancies (W vacancy, S vacancy, or the coexistence of W and S vacancies), simultaneously combing with doping strategy to improve the intrinsic conductivity and activate the HER catalytic performance of S sites in the basal plane of pristine WS₂ nanospheres. Herein, high-energy Fe¹³⁺-ion irradiation technology was used to irradiate the WS₂ surface, which not only regulates multi-vacancies, but also introduces Fe dopants with Fe²⁺ and Fe³⁺ into WS₂. Density functional theory firstly demonstrates that the creation of multi-vacancies coupling with Fe doping could significantly narrow the band gap of pristine WS₂, which is beneficial to the acceleration of electron transfer during the HER process. Experimentally, moderate doses of the Fe¹³⁺-ion irradiated WS₂ electrocatalyst (8*10¹³) achieved the optimum HER activity with a higher current density, lower onset overpotential and excellent stability in acidic electrolyte. This strategy is a promising perspective for the design of highly efficient electrocatalysts via the Fe¹³⁺-ion irradiation pathway.

离子辐照对2H相WS ₂基面的活化和电导率的影响对于增强析氢反应（HER）性能仍然难以捉摸。这项研究的目的是通过创建多个空位（W空位，S空位或W和S空位的共存）来增加电催化活性位点的数量，同时结合掺杂策略以提高固有电导率并激活HER原始WS ₂纳米球基面中S部位的催化性能。此处，采用高能Fe ¹³⁺离子辐照技术辐照WS ₂表面，不仅调节了多个空位，而且还引入了Fe ²⁺掺杂剂。和Fe ³⁺进入WS ₂。密度泛函理论首先证明，与Fe掺杂形成多空位可显着缩小原始WS ₂的带隙，这有利于HER过程中电子转移的加速。实验上，中等剂量的Fe ¹³⁺离子辐照的WS ₂电催化剂（8 * 10 ¹³）具有最佳的HER活性，具有更高的电流密度，更低的起始过电位和在酸性电解质中的出色稳定性。该策略是通过Fe ¹³⁺离子辐射途径设计高效电催化剂的一个有前途的观点。