摘要
在铂微盘电极上利用电位阶跃和循环伏安技术,求出了高铁酸根离子在不同温度、不同浓度的KOH溶液中的扩散系数。探讨了高铁酸根离子在KOH溶液中扩散传质过程的特点对超铁电池放电性能所造成的影响。另外,循环伏安试验发现高铁酸根离子在KOH溶液中的电化学还原是一个多步过程。
Techniques of chronoamperometry and cyclic voltammetry were employed to study the electroreduction and diffusion behavior of ferrate （ Ⅵ ） ion in different concentration of KOH solution at different temperature. Diffusion coefficient of ferrate （ Ⅵ ） ion could be calculated. The impact of the mass transfer of fen＇ate（ Ⅵ ） ion in electrolyte on the super-iron battery in discharge has also been discussed. In addition, the experimental results of cyclic voltammetry indicated that the electro-reduction of ferrate（ Ⅵ ） ion involves more than one step.
出处
《化学工业与工程》
CAS
2005年第6期411-414,437,共5页
Chemical Industry and Engineering
基金
国家重点基础研究发展规划项目资助(2002CB211800)
关键词
恒电位阶跃
扩散系数
放电
循环伏安
chronoamperometry
diffusion coefficient
discharge
cyclic voltammetry
