AC/Ni-Co复合电极材料的制备及其催化析氢性能

复合材料学报, 2006, 23(3): 77-81. doi: 10.3321/j.issn:1000-3851.2006.03.015

AC/Ni-Co复合电极材料的制备及其催化析氢性能

姚素薇 ^1, , 李贺 ^2, , 张卫国 ^3, , 王宏智 ^4, , 贲宇恒 ^5,

1.天津大学,化工学院,杉山表面技术研究室,天津,300072

2.天津大学,化工学院,杉山表面技术研究室,天津,300072

3.天津大学,化工学院,杉山表面技术研究室,天津,300072

4.天津大学,化工学院,杉山表面技术研究室,天津,300072

5.天津大学,化工学院,杉山表面技术研究室,天津,300072

基金项目: 中国科学院资助项目(50271046) 高等学校博士学科点专项科研项目(20030056034)

关键词： AC/Ni-Co , 复合材料 , 电催化 , 析氢反应

Preparation and property for hydrogen evolution of AC (activated char)/ Ni-Co composite electrode materials

采用复合电沉积法制备了AC(活性炭)/Ni-Co复合电极.XRD和SEM测试结果表明,AC微粒的复合未改变Ni-Co合金电极的物相结构,但使镀层的表面粗糙度和真实表面积增大.通过稳态阴极极化曲线和电化学交流阻抗技术考察了不同电极在1 mol·L-1 NaOH溶液中的催化析氢性能,结果表明,镀液中AC含量为3 g·L-1时所制备的AC/Ni-Co复合电极较Ni电极和Ni-Co合金电极具有更高的催化析氢活性,电流密度为30 mA·cm-2时,析氢反应极化电位分别比Ni电极和Ni-Co合金电极正移230 mV和140 mV,表观交换电流密度分别是Ni电极和Ni-Co合金电极的42倍和9倍,复合电极催化析氢性能的提高主要归因于电极真实表面积的增大.

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