| 高析氢活性Ni-Mo-Zn合金电极的制备与表征 |
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| 引用本文： | 朱波,刘贵昌,施志聪,王华,刘伟. 高析氢活性Ni-Mo-Zn合金电极的制备与表征[J]. 微细加工技术, 2008, 0(6) |
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| 作者姓名： | 朱波 刘贵昌 施志聪 王华 刘伟 |
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| 作者单位： | 大连理工大学化工学院,大连,116012 |
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| 摘 要： | 采用两步电沉积方法在碱性柠檬酸盐-氨水络合体系中制备了含有Ni-Mo中间层的Ni-Mo-Zn电极,通过在热碱溶液中浸泡除去部分Zn后得到高析氢活性电极.SEM测试发现,该电极的合金镀层表面有多层结构和二级颗粒,它们经热碱溶液浸泡后会形成大颗粒包裹小颗粒(粒径小于1μm)的类似"藤壶"状表面形貌.通过稳态阴极极化曲线考察了不同电极的催化析氢性能,发现含有Ni-Mo中间镀层的Ni-Mo-Zn电极在碱洗后较Ni电极和没有中间层的Ni-Mo-Zn电极具有更高的析氢活性.在0.1 A·cm-2电流密度下,析氢反应极化电位分别比Ni电极和没有中间层的Ni-Mo-Zn电极正移502 mV和93 mV,交换电流密度分别是Ni电极和Ni-Mo-zn电极的91倍和4倍.该电极的高活性主要归因于镀层的特殊表面结构和Ni-Mo中间镀层的存在.
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| 关 键 词： | Ni-Mo-Zn电极 电沉积 热碱浸泡 析氢 |
Preparation and Characterization of Ni-Mo-Zn Alloy Electrode for Hydrogen Evolution |
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| ZHU Bo,LIU Gui-chang,SHI Zhi-cong,WANG Hua,LIU Wei. Preparation and Characterization of Ni-Mo-Zn Alloy Electrode for Hydrogen Evolution[J]. Microfabrication Technology, 2008, 0(6) |
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| Authors: | ZHU Bo LIU Gui-chang SHI Zhi-cong WANG Hua LIU Wei |
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| Affiliation: | ZHU Bo,LIU Gui-chang,SHI Zhi-cong,WANG Hua,LIU Wei(Department of Chemical Engineering,Dalian University of Technology,Dalian 116012,China) |
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| Abstract: | Ni-Mo-Zn electrode with Ni-Mo interlayer,which has high activity for Hydrogen Evolution Reaction(HER),were obtained by two-step electrodeposition in alkaline citrate-ammonia bath and following leaching of zinc in hot alkaline solution.The surface morphology and microstructure of all as-prepared electrodes were analyzed by SEM.Results showed that the coating formed on the Ni-Mo electrodeposited interlayer had a new barnacle-like surface-a multilayered structure and sub-particles,which means a pile of tiny pa... |
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| Keywords: | Ni-Mo-Zn electrode electrodeposition hot alkaline leaching hydrogen evolution |
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