The development of an efficient water splitting catalyst is a requirement for sustainable hydrogen production. Ni catalysts with different shapes were prepared using a solvothermal method for hydrogen evolution reaction (HER). The growth of the Ni particles was manipulated by controlling the reaction temperature and surfactant during the solvothermal reaction. The HER activity of the herein obtained Ni catalysts, namely semi‐spherical, dendritic, and spiky nanoparticles were evaluated in alkaline conditions. Spiky Ni nanoparticles exhibited superior HER catalytic activity compared to that of spherical and dendritic Ni nanoparticles. The effect of morphology and electrochemical active sites has been fully investigated.

中文翻译：

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尖峰镍纳米粒子在产氢反应中的应用

开发有效的水分解催化剂是可持续制氢的要求。使用溶剂热法进行析氢反应制备了不同形状的Ni催化剂。通过在溶剂热反应期间控制反应温度和表面活性剂来控制Ni颗粒的生长。在碱性条件下评估了本文获得的Ni催化剂（即半球形，树枝状和尖峰的纳米颗粒）的HER活性。与球形和树枝状的Ni纳米颗粒相比，尖峰的Ni纳米颗粒具有优异的HER催化活性。形态和电化学活性位的影响已得到充分研究。