经热扩散处理的注镍钛电极的析氢反应研究  

Studies on Hydrogen Evolution at Thermodiffusion-Treated Nickel-Implanted Titanium Electrodes

作　　者：张季爽[1] 王蓉晖[1] 吕瑶姣[1] 杨进全[1] 冯汉明 

机构地区：[1]湖南大学化学化工系

出　　处：《高等学校化学学报》1990年第10期1124-1125,共2页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金;中国科学院上海冶金研究所离子束开放实验室基金

摘　　要：将高能离子注入电极表面可引入催化活性元素,进而能形成大量的活性中心,提高催化活性,作者将镍离子注入钛电极,结果使析氢过电位降低245 mV,比未注镍的钛电极的活性高得多。实验表明,电极的催化活性随表面镍浓度的增加而提高。Ni-implanted Ti electrodes were treated by thermodiffusion in higher vacuum for 1 h at the temperature from 100 to 700℃ , and the hydrogen evolution reaction was then studied at the electrodes in the solution of 0. 856 mol/L NaCl plus 0. 01 mol/L HCl. Two orders of magnitude increases in exchanging current density (to) were recorded for the .thermodif fusion-treated electrodes by comparison with the untreated. The effect is attributed to the increase of nickel concentration on the electrode surface.

关 键 词：钛电极 镍离子注入 热扩散 电催化 

分 类 号：O646.54[理学—物理化学]