镍在含硫氰酸根离子的硫酸溶液中电溶解的电流振荡  

Current oscillatory behaviors of nickel in sulfuric solution containing thiocyanate ions

作　　者：郑菊芳[1] 李则林[1] 

机构地区：[1]浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2008年第4期432-436,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：国家自然科学基金资助项目(20373063)

摘　　要：报道了镍在含硫氰酸根离子的硫酸溶液中电溶解的电流振荡新体系.实验结果表明,在硫酸溶液中,硫氰酸根离子的加入使镍在活化/钝化过渡区产生电流振荡,并且随着SCN-浓度的升高或电极电势的降低,电流振荡周期逐渐变短.根据电化学实验和拉曼光谱测定结果,初步解释了镍在该介质中的阳极溶解行为和振荡机理.A new current oscillatory system for nickel in sulfuric solution containing thiocyanate ions was investigated. The results indicated that the period of the current oscillations became shorter gradually while increasing the concentration of SCN^- or decreasing the applied potential. Some preliminary explanations were given on the mechanism of the oscillatory eleetrodissolution of nickel in this medium according to the results from electrochemical experiments and in situ Raman spectra.

关 键 词：镍 硫氰酸根离子 电流振荡 拉曼光谱 

分 类 号：O646[理学—物理化学]