Abstract：To develop efficient and stable hydrogen evolution electrocatalysts, Ni-Sn-B hydrogen evolution electrode were prepared on Ni mesh substrate by galvanostatic electrodeposition method. The morphology, structure, elemental composition, and electrocatalytic hydrogen evolution properties of the electrode were characterized and tested by scanning electron microscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and electrochemical workstation. The results show that the surface of Ni-Sn-B electrode is composed of rough cellular particles, which are closely packed and have amorphous characteristic structure. Ni-Sn-B electrode has excellent catalytic performance and stability for hydrogen evolution in alkaline solution. The overpotential is only 63 mV at current density of 10 mA/cm2, which is 38.2% and 59.1% lower than that of Ni-Sn and Ni-B electrodes. The charge transfer resistance of electrode is 1.56 Ω, and the excellent hydrogen evolution activity is still maintained after 5 000 cycles of voltammetry and 72 h electrolysis. The abundant surface morphology and amorphous characteristic structure can significantly increase the electrochemical active surface area and catalytic active site. The regulation of B and Sn on the electronic structure of Ni effectively decreases the charge transfer resistance and improves the properties of electrocatalytic hydrogen evolution reaction.
阳刚, 何捍卫. 电沉积法制备自支撑Ni-Sn-B电极的显微结构与电催化析氢性能[J]. 粉末冶金材料科学与工程, 2023, 28(3): 276-287.
YANG Gang, HE Hanwei. Microstructure and electrocatalytic hydrogen evolution performance of self-supported Ni-Sn-B electrode prepared by electrodeposition method. Materials Science and Engineering of Powder Metallurgy, 2023, 28(3): 276-287.
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2023, Vol. 28 
