脉冲电镀制备Ni-Mo合金镀层及其析氢性能  

Preparation of Ni-Mo Alloy Coating by Pulse Plating and Its HER Activity

作　　者：韩庆[1] 孙克宁[1] 董晓辉[2] 陈建设[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]中国铝业股份有限公司山东分公司,山东淄博255051

出　　处：《东北大学学报（自然科学版）》2009年第5期704-707,共4页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究发展规划项目(2007CB210305);国家自然科学基金资助项目(50404008);辽宁省博士启动基金资助项目(20082035)

摘　　要：研究了脉冲电镀法制备Ni-Mo合金镀层过程中电镀条件对Ni-Mo合金镀层组成、表观形貌以及析氢性能的影响.当n(Ni)∶n(Mo)<1时,随着钼盐的加入,镀层中的Mo含量逐渐下降,镀层的析氢过电位升高;利用脉冲电镀制备的Ni-Mo合金镀层均匀、平整、致密,其中w(Mo)在30%左右的Ni-Mo合金镀层呈非晶态结构,具有更高的催化活性(80℃,η200=62 mV)以及较高的耐蚀性.经100 h电解后(33%NaOH溶液中),镀层非晶态结构被破坏.随着Mo的溶出,镀层孔隙率增大并出现鼓泡现象.The effects of different electrodeposition conditions in the pulse plating process to prepare Ni-Mo coating on its composition, apparent morphology and HER （hydrogen evolution reaction） activity were investigated. If the quantitative ratio of nickel to molybdenum is lower than 1 （mol%）, the Mo content in the coating decreases gradually with the molybdenum salt adding to the coating, while the corresponding HER overpotential increases. The Ni-Mo coating thus prepared presents amorphous structure （ w （Mo） = 30 % ） in combination with homogeneous, smooth and characteristics, especiMly it provides a higher catalytic activity （80 ℃, 7200 = 62 mV） with high corrosion resistance. After the galvanostatic electrolysis in 33 % NaOH solution for 100 hr, the amorphous structure is destroyed due to Mo dissolution, then the bubbling comes to pass with increasing porosity .

关 键 词：脉冲电镀 Ni—Mo合金 析氧活性 Mo含量 非晶态 

分 类 号：TQ153.2[化学工程—电化学工业]