| 复合电沉积制备（Ni-Mo）-TiO2电极及其电催化析氢性能 |
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| 引用本文： | 李爱昌,龙运前,刘辉,路敏,张翠丽.复合电沉积制备（Ni-Mo）-TiO2电极及其电催化析氢性能[J].材料科学与工艺,2009(6):793-796. |
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| 作者姓名： | 李爱昌 龙运前 刘辉 路敏 张翠丽 |
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| 作者单位： | 廊坊师范学院化学与材料科学学院; |
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| 基金项目： | 廊坊师范学院重点资助研究项目(LSZZ200902) |
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| 摘 要： | 为开发新型廉价高效的析氢材料,用恒电流复合电沉积方法制备了(Ni-Mo)-TiO2复合电极,讨论了TiO2悬浮量和电沉积时间对电极催化析氢性能的影响.用XRD和SEM对电极的晶体结构和表面形貌进行了表征,以稳态极化曲线对电极的催化析氢特性进行了评价.结果表明,(Ni-Mo)-TiO2电极是纳米TiO2粒子相和纳米晶Ni-Mo固溶体相构成的复合电极.电极具有较高的催化析氢活性.在25℃、0.5mol.dm-3H2SO4溶液中其表观交换电流密度是Ni-Mo合金电极的2.6倍,是Ni电极的60倍.在电流密度为100mA·cm-2时,电极电势相对于Ni-Mo电极正移了120mV,相对于Ni电极正移了542mV.催化活性的提高源于反应机理的改变,表观活化吉布斯自由能相对于Ni-Mo合金电极降低了24.48kJ·mol-1.
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| 关 键 词： | 复合电沉积 电催化 析氢 (Ni-Mo)-TiO2 |
Electrochemical preparation and characteristics of (Ni-Mo)-TiO_2 composite coating used as electrode materials for hydrogen evolution |
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| LI Ai-chang,LONG Yun-qian,LIU Hui,LU Ming,ZHANG Cui-li.Electrochemical preparation and characteristics of (Ni-Mo)-TiO_2 composite coating used as electrode materials for hydrogen evolution[J].Materials Science and Technology,2009(6):793-796. |
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| Authors: | LI Ai-chang LONG Yun-qian LIU Hui LU Ming ZHANG Cui-li |
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| Affiliation: | LI Ai-chang,LONG Yun-qian,LIU Hui,LU Ming,ZHANG Cui-li(Faculty of Chemistry , Material Science,Langfang Teachers College,langfang 065000,China) |
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| Abstract: | (Ni-Mo)-TiO2 composite coating was prepared by electrolytic co-deposition of Ni-Mo ally and TiO2 particles on a Cu substrate from a solution in which TiO2 nano particles (P-25) were suspended by stiring. Effects of concentration of TiO2 particles suspended in the plating bath and depositing time on the catalytic activity for the hydrogen evolution reaction (HER) were discussed. The surface morphology and microstructure of (Ni-Mo)-TiO2 coating were observed by SEM and XRD. Catalytic activity for HER was eval... |
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| Keywords: | composite electroplating electrocatalysis hydrogen evolution (Ni-Mo)-TiO2 |
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