Study on Electrodeposited Ni-S and Ni-P-S Alloy Cathodes for Hydrogen Evolution

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Abstract On the basis of Ni-S alloy electrode made by electrodeposition method, Ni-P-S alloy electrode was obtained by adding sodium hypophosphite monohydrate into the bath.The tested electrochemical properties show that electrochemical activities of Ni-P-S alloy electrode and Ni-S alloy electrode are much higher than those of other electrodes,the increment of sodium hypophosphite monohydrate concentration would reduce the activity of Ni-P-S alloy electrode.Furthermore,the corresponding electrode kinetic parameters,such as Tafel slope b,the exchange current density ρ~0 and the overpotential η,were calculated,then the reason why Ni-P-S alloy electrode and Ni-S alloy electrode had different activity in different current density area was explained.The high electrochemical stability of Ni-P-S alloy electrode was determined by constant-current electrolysis.Finally,The micrographs of electrode surface were investigated by SEM.The mass contents of elements in coatings were measured by EDS,and the structure of alloy cathodes were analyzed by XRD.

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Keywords： Ni-S alloy electrode Ni-P-S alloy electrode electrocatalytic activity overpotential

Received 2008-11-15; published 2008-11-15

Cite this article:

MA Qiang,BA Jun-zhou,JIANG Ya-xiong,LI Jun,WU Wen-hong.Study on Electrodeposited Ni-S and Ni-P-S Alloy Cathodes for Hydrogen Evolution[J] Chemcial Industry and Engineering, 2008,V25(6): 475-479

[1]	WEN T C,LIN S M,Sulphur content and the hydrogenevolving activity of NiSx deposits using statisticalexperimental strategies[J].J Appl Electrochem,1994,24:233-237.
[2]	PASEKA I.Sorption of hydrogen and kinetics of hydrogenevolution on amorphous Ni-Sxelectrode[J].ElectrochimicaActa,1993,38(16):2 449-2 454.
[3]	PASEKA I.Evolution of hydrogen and its sorption onremarkable active amorphous smooth Ni-P(x)electrodes[J].Electrochimica Acta.1995,40:1-
[4]	PASEKA I,VELICKA J.Hydrogen evolution and hydrogensorption on amorphous smooth Me-P(x)(Me=Ni,Co andFe-Ni)electrodes[J].Electrochimica Acta.1997,42:237-242
[5]	PASEKA I.Influence of hydrogen absorption in amorphousNi-P electrode on double layer capacitance and chargetransfer coefficient of hydrogen evolution reaction[J].Electrochimica Acta,1999,44:4 551-4 558.
[6]	SHERVEDANI R K,LASIA A.Studies of the hydrogenevolution reaction on Ni-P electrodes[J].J ElectrochemSoc.1997,144:511-519
[7]	张旭东,赵蕾,张建民,等.化学镀Ni-P-S阴极的析氢性能[J].河南化工,2004,8:13-15.
[8]	电子工业部第十设计研究院.氢气生成与纯化[M].哈尔滨:黑龙江科学技术出版社,1983.
[9]	何圣静,高莉如.非晶态材料及其应用[M].北京:机械工业出版社,1987.