Hydrogen is a vital clean energy, and reducing overpotential in hydrogen evolution has become necessary research, in which CoMo bimetal material is a promising high-efficiency hydrogen evolution material. In this study, boron was added to MoCo bimetallic ion catalysts with carbon cloth and copper foil substrates, and it was found that adding boron could significantly reduce the hydrogen evolution overpotential of the catalysts. The morphology analysis by SEM showed that the addition of boric acid in the electrolyte could change the morphology of the catalyst, making the surface of the catalyst smooth and uniform distribution on the carrier, while the surface of the catalyst without boric acid formed agglutination. The prepared CoMoB-CC catalyst has an overpotential of 44.1 mV when the current density is -10 mA·cm⁻². This paper primarily presents interesting phenomenon of the smooth effect of boric acid on the catalytic electrode, and the prepared catalyst has good catalytic performance, which provides some help for the preparation of hydrogen evolution materials.

氢是重要的清洁能源，降低析氢过电位已成为必要的研究，其中CoMo双金属材料是一种很有前景的高效析氢材料。本研究将硼添加到碳布和铜箔基材的MoCo双金属离子催化剂中，发现添加硼可以显着降低催化剂的析氢过电势。SEM形貌分析表明，电解液中硼酸的添加可以改变催化剂的形貌，使催化剂表面光滑、均匀分布在载体上，而没有硼酸的催化剂表面形成凝集。^{所制备的CoMoB-CC催化剂在电流密度为-10 mA·cm -2}时的过电位为44.1 mV 。本文主要展示了硼酸在催化电极上平滑作用的有趣现象，所制备的催化剂具有良好的催化性能，为析氢材料的制备提供了一定的帮助。