电镀条件对镍钼合金镀层结构组织和催化活性的影响  

INFLUENCE OF ELECTROPLATING CONDITIONS ON SURFACE MORPHOLOGY AND ELECTROCATALYTIC ACTIVITY OF Ni-Mo ALLOYS

作　　者：胡伟康[1,2] 申泮文[1,2] 张允什[1,2] 周作祥[1,2] 汪筠 

机构地区：[1]南开大学化学系 [2]南开大学新能源材料化学研究所

出　　处：《南开大学学报（自然科学版）》1994年第3期17-21,共5页Acta Scientiarum Naturalium Universitatis Nankaiensis

摘　　要：本文较系统地研究了镍钼合金的电镀条件对镀层的化学组成、表面结构和析氢催化活性的影响。镀层中的钼含量和催化活性随镀液中钼含量的增加而增加。在较低ｐＨ值下电镀得到的镍钼合金具有较佳的析氢电催化活性。在１ｍｏｌ／ＬＮａＯＨ溶液，４０℃和１００ｍＡ／ｃｍ２电解条件下，析氢过电位约为１２２ｍＶ。用Ｘ光电子能谱和扫描电镜分别分析了镀层的表面元素价态和表面结构组织。The nickel-molybdenum alloys have been electrodeposited in various electroplating conditions on iron substrates and studied the influence of the electroplating conditions on the composition, surface morphology and electrocatalytic activity of the nickel-molybdenum alloys. It was shown that the electrocatalytic activity for hydrogen evolution reaction increased with increase of the molybdenum content and the best electrocatalytic activity of Ni-Mo alloy was obtained in lower bath pH. The best hydrogen evolving cathode exhibited an overpotential of about 122mV in 1mol/L NaOH at 100 mA/cm2 and 40℃. The Chemical state of element and surface morphology of the coated-cathode were examined by X-ray photoelectron spectroscopy and electronmicroscopy, respectively.

关 键 词：电镀 镍钼合金 电催化 镀层 

分 类 号：TQ153.2[化学工程—电化学工业]