pH值对电沉积NiFe合金形貌及析氢性能的影响  

Influence of pH on the microstructure and electrochemical hydrogen evolution of NiFe alloy

作　　者：严朝雄[1] 王菊平[2] 徐志花[2] 郝卫东[2] 

机构地区：[1]黄冈师范学院物理与电子信息学院,湖北黄州438000 [2]黄冈师范学院化工学院,湖北黄州438000

出　　处：《黄冈师范学院学报》2013年第6期26-29,共4页Journal of Huanggang Normal University

基　　金：湖北省教育厅科技项目(B2013136);湖北省自然科学基金(2009CDB010);教育部重点项目(212115)

摘　　要：采用电沉积方法制备了NiFe合金。通过X-射线衍射(XRD)、场发射扫描电镜(SEM)、线性扫描和Tafel曲线等测试手段研究了合金相组成、表面形貌及电化学析氢性能。研究结果表明,镀液pH值对NiFe合金相组成、表面形貌和电化学析氢性能有较大的影响。当镀液pH值为6.19时,NiFe合金为纳米自组装的花状多孔结构,其电化学析氢性能好。NiFe alloy was prepared through eleetrodeposition. The phase structure, morphology and electrochemical hyo- drogen evolution of NiFe alloy were investigated with XRD, SEM, polarization curve and Tafel curve. Results show that pH of the plating solution has an influence on the phase structure, morphology and electrochemical hyodrogen evolution of NiFe alloy. At pH= 6.19, NiFe alloy is a hierarchical porous flower-like structure self-assembled by nanoparticles, and exhibits the excellent electrochemical activity for hydrogen evolution.

关 键 词：电沉积 NiFe合金 电化学析氢 

分 类 号：O646[理学—物理化学] TB383[理学—化学]