pH值对电镀镍镀层析氢性能的影响  

Effect of pH value on hydrogen evolution property of nickel coating of electroplating

作　　者：邢乐红[1] 孟凡旭 郝云贵 石鑫婷 王宜鑫 田蕊 刘佳一 Xing Lehong;Meng Fanxu;Hao Yungui;Shi Xinting;Wang Yixin;Tian Rui;Liu Jiayi(School of Chemistry and Chemical Engineering,Mudanjiang Normal University,Mudanjiang 157012,China)

机构地区：[1]牡丹江师范学院化学化工学院,黑龙江牡丹江157012

出　　处：《电镀与精饰》2023年第8期20-25,共6页Plating & Finishing

基　　金：黑龙江省自然科学基金联合引导项目(LH2022B023,JJ2022LH0472);牡丹江师范学院青年骨干项目(QN2022007),牡丹江师范学院研究生课程思政高质量建设项目(高等电化学课程思政项目);牡丹江师范学院研究生科技创新项目(kjcx2022-068mdjnu);牡丹江师范学院大学生创新创业训练计划项目(202210233001);黑龙江省基本科研业务费科研项目(1452ZD008)。

摘　　要：在氨磺酸体系中,改变镀液pH值在紫铜表面制备镍镀层。通过扫描电镜(SEM)、线性极化曲线(LSV)、塔菲尔曲线(Tafel)、电化学阻抗谱(EIS)和计时电位法(CP)等方法对镍镀层的微观形貌、析氢性能和稳定性进行了测试。结果表明,当镀镍液的pH值为3.8时,镍镀层结晶细致且均匀,优化后的镍镀层暴露出更多的电催化析氢活性位点,在碱性电解液中表现出最佳的析氢性能,同时具有良好的析氢稳定性。In the sulfamate plating system,the nickel coating was prepared on the red copper surface with different pH values.The micromorphology,hydrogen evolution property and stability for nickel coatings were characterized using scanning electron microscopy(SEM),linear polarization curve(LSV),Tafel curve,electrochemical impedance spectroscopy(EIS)and chronopotentiometry(CP).The results showed that when the pH value of nickel plating solution was 3.8,the crystallization of nickel coating was fine and uniform,and the optimized nickel coating exposed more active sites for electrocatalytic hydrogen evolution,it showed the best hydrogen evolution catalytic activity in alkaline electrolyte.Moreover,the coating had good stability in hydrogen evolution reaction.

关 键 词：电沉积 镍镀层 析氢反应 催化活性 

分 类 号：TQ116.2[化学工程—无机化工]