Time-Dependent Surface Structure Evolution of NiMo Films Electrodeposited Under Super Gravity Field as Electrocatalyst for Hydrogen Evolution Reaction
Yu, Xiangtao1; Wang, Mingyong2; Wang, Zhi2; Gong, Xuzhong2; Guo, Zhancheng1
2017-08-10
发表期刊JOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
卷号121期号:31页码:16792-16802
摘要The surface structures of the electrodeposited NiMo films from compact to porous structure are adjusted by the combination of gravity acceleration and electrodeposition time. The evolution mechanism of surface structure is discussed based on the protrusion growth theory. The dependence of catalytic activity of the NiMo films for hydrogen evolution reaction (HER) on surface structure evolution is studied. The results indicate that compact NiMo layer is first electrodeposited, and then protrusions are formed. Finally, the protrusions rapidly grow and form a porous structure. It is found that only the compact NiMo films are electrodeposited under normal gravity condition due to a long induced time for the protrusions formation. Under super gravity field, the induced time for the protrusions formation is only less than 5 man owing to the enhanced mass transfer by the gravity-induced convection and hydrogen bubble agitation convection. So, a porous structure is easily formed under high gravity acceleration and long electrodeposition time. The HER activities of NiMo films are improved with the surface structure evolution from compact to porous structure due to the increase of active area. All NiMo films exhibit a good long-term durability, and the cell voltage of water electrolysis on porous NiMo films is lower.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1021/acs.jpcc.7b03822
收录类别SCI
语种英语
关键词[WOS]MO ALLOY COATINGS ; INDUCED CODEPOSITION ; COPPER ELECTRODEPOSITS ; WATER ELECTROLYSIS ; CENTRIFUGAL FIELDS ; CATALYTIC-ACTIVITY ; THIN-FILMS ; NICKEL ; MORPHOLOGY ; EFFICIENT
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
项目资助者Natural Science Foundation of China(51274180 ; Youth Innovation Promotion Association, CAS(2015036) ; 51422405)
WOS记录号WOS:000407655900013
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文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23165
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
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Yu, Xiangtao,Wang, Mingyong,Wang, Zhi,et al. Time-Dependent Surface Structure Evolution of NiMo Films Electrodeposited Under Super Gravity Field as Electrocatalyst for Hydrogen Evolution Reaction[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2017,121(31):16792-16802.
APA Yu, Xiangtao,Wang, Mingyong,Wang, Zhi,Gong, Xuzhong,&Guo, Zhancheng.(2017).Time-Dependent Surface Structure Evolution of NiMo Films Electrodeposited Under Super Gravity Field as Electrocatalyst for Hydrogen Evolution Reaction.JOURNAL OF PHYSICAL CHEMISTRY C,121(31),16792-16802.
MLA Yu, Xiangtao,et al."Time-Dependent Surface Structure Evolution of NiMo Films Electrodeposited Under Super Gravity Field as Electrocatalyst for Hydrogen Evolution Reaction".JOURNAL OF PHYSICAL CHEMISTRY C 121.31(2017):16792-16802.
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