电沉积Ni-Mo-Fe-La合金析氢电极的工艺研究  

Study on Electrodeposition Process of Ni-Mo-Fe-La Alloy Hydrogen Evolution Electrode

作　　者：徐超[1] 王淼宇 周建波[1] 崔小莹[1] 陈文[1] 付薪菱[1] XU Chao;WANG Miaoyu;ZHOU Jianbo;CUI Xiaoying;CHEN Wen;FU Xinling(Department of Basic Medical Science,Changsha Medical University,Changsha 410219,China)

机构地区：[1]长沙医学院基础医学院,湖南长沙410219

出　　处：《电镀与精饰》2020年第8期7-12,共6页Plating & Finishing

基　　金：湖南省教育厅科学研究项目(19C0221,18C1185)。

摘　　要：采用电沉积法制备了La掺杂的Ni-Mo-Fe-La合金,并探究了氯化镧浓度、钼酸钠浓度、电流密度、沉积时间等工艺参数对Ni-Mo-Fe-La合金析氢性能的影响,并与Ni-Mo-Fe合金的析氢性能进行了对比。结果表明,在最佳工艺条件下,电沉积法制备的Ni-Mo-Fe-La合金具有优于Ni-Mo-Fe合金的催化析氢活性。Ni-Mo-Fe-La合金具有较大的比表面积与交换电流密度、较小的表观活化能与析氢反应电化学阻抗,且耐腐蚀性能较强。扫描电镜结果显示Ni-Mo-FeLa电极表面由许多细小颗粒组成,电极表面致密且粗糙。The Ni-Mo-Fe-La alloy was prepared by electrodeposition method,the effects of electrodeposition process parameters,such as the concentration of lanthanum chloride and sodium molybdate,current density and electrodeposition time on the hydrogen evolution performance of the Ni-Mo-Fe-La alloy were investigated,and compared with the hydrogen evolution performance of Ni-Mo-Fe alloy.The results showed that the Ni-Mo-Fe-La alloy prepared under the optimum conditions had better hydrogen evolution catalytic activity than Ni-Mo-Fe alloy.The Ni-Mo-Fe-La alloy electrode had higher specific surface area and exchange current density,lower apparent activation energy and electrochemical impedance of hydrogen evolution reaction,and higher corrosion resistance.The SEM results indicated that the Ni-Mo-Fe-La alloy was composed of many smaller particles,which had a compact and rough surface.

关 键 词：Ni-Mo-Fe-La合金 电沉积 析氢过电位 电催化活性 

分 类 号：TQ153.2[化学工程—电化学工业]