In this study, a low-cost cobalt‑nickel [email protected] spheres was developed as catalyst for the hydrogen evolution reaction (HER) via a facile two-step method. The structure of as-prepared phosphides was characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and N₂ adsorption-desorption isotherms. In the 0.5 M H₂SO₄ electrolyte, the optimized sample, namely Co₁Ni₁[email protected], delivers an overpotential of 169 mV for HER at the current density of 10 mA cm⁻² with excellent stability. The results showed that the composition of obtained cobalt‑nickel phosphides plays a critical role in enhancing the HER electrocatalytic performance.

在这项研究中，通过一种简便的两步法，开发了一种低成本的钴镍[受电子邮件保护的]球作为氢释放反应（HER）的催化剂。制备的磷化物的结构通过扫描电子显微镜，透射电子显微镜，X射线光电子能谱和N ₂吸附-解吸等温线表征。在0.5 MH ₂ SO ₄电解质中，优化的样品Co ₁ Ni ₁ [受电子邮件保护]在10 mA cm ^-2的电流密度下为HER提供169 mV的过电势具有出色的稳定性。结果表明，所获得的钴镍磷化物的组成在增强HER电催化性能方面起着关键作用。