| 脉冲电沉积制备Ni-W-Fe-La纳米晶析氢电极材料 |
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| 引用本文： | 张学会,刘峥,王国瑞,张京迪.脉冲电沉积制备Ni-W-Fe-La纳米晶析氢电极材料[J].材料保护,2010,43(6). |
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| 作者姓名： | 张学会 刘峥 王国瑞 张京迪 |
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| 作者单位： | 桂林工学院材料与化学工程系,广西,桂林,541004;桂林工学院材料与化学工程系,广西,桂林,541004;桂林工学院材料与化学工程系,广西,桂林,541004;桂林工学院材料与化学工程系,广西,桂林,541004 |
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| 基金项目： | 广西科学基金项目(桂科基0731015); 广西研究生教育创新人才联合培养基地项目 |
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| 摘 要： | 脉冲电沉积合金层较为复杂,目前尚未实际应用。采用脉冲电沉积技术制备了Ni-W-Fe-La纳米晶合金析氢镀层,利用扫描电镜、X射线衍射仪、能谱仪等设备测试了合金镀层的形貌、结构和组成。研究了制备工艺对镀层析氢性能的影响。确定了合金镀层的最佳制备工艺条件:机械搅拌下,控制平均电流密度Jm=5A/dm2,峰值电流密度Jp=14A/dm2,占空比R为35%,脉冲频率f=150Hz,pH值6.0～6.5,脉冲时间30min,镀液温度35℃。结果表明:制备的Ni-W-Fe-La镀层为纳米级镀层,其晶粒尺寸为48.73nm;稀土La元素的加入能够明显改变镀层表面形貌、晶粒尺寸以及镀层的耐蚀和析氢电催化活性,析氢电位比直流电沉积所得的同类镀层明显正移。
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| 关 键 词： | 脉冲电沉积 纳米晶合金 稀土 析氢性能 |
Preparation of Pulse Electrodeposited Ni-W-Fe-La Nanocrystalline Alloy as Hydrogen Evolution Electrode Material |
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| ZHANG Xue-hui,LIU Zheng,WANG Guo-rui,ZHANG Jing-di.Preparation of Pulse Electrodeposited Ni-W-Fe-La Nanocrystalline Alloy as Hydrogen Evolution Electrode Material[J].Journal of Materials Protection,2010,43(6). |
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| Authors: | ZHANG Xue-hui LIU Zheng WANG Guo-rui ZHANG Jing-di |
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| Affiliation: | ZHANG Xue-hui,LIU Zheng,WANG Guo-rui,ZHANG Jing-di ( Department of Materials , Chemical Engineering,Guilin Polytechnical Institute,Guiling 541004,China) |
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| Abstract: | Nanocrystalline Ni-W-Fe-La alloy coatings were obtained by pulse electrodeposition.The morpholo-gy,microstrutre and composition of the alloy coatings were ana-lyzed by means of scanning electron microscopy,X-ray diffraction and energy dispersive spectrometry.The effect of electrodeposi-tion conditions on the hydrogen evolution performance of the alloy coatings was investigated,and the optimized conditions for pre-paring the alloy coatings were established.Results indicate that it is feasible to prepare nano... |
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| Keywords: | pulse electrodeposition nanocrystalline alloy rare earth hydrogen evolution performance |
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