期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
外在因素对TiO_2膜电极/溶液界面CPE行为的影响 被引量:4
1
作者 郭源 李永军 +2 位作者 夏熙 张校刚 何茂霞 《物理化学学报》 SCIE CAS CSCD 北大核心 2001年第4期372-376,共5页
Under ideally polarizable conditions, TiO2 film electrode/solution electrolyte interface exhibited frequency dispersion, The effects of external factors such as the concentration of KNO3, various electrolytes and appl... Under ideally polarizable conditions, TiO2 film electrode/solution electrolyte interface exhibited frequency dispersion, The effects of external factors such as the concentration of KNO3, various electrolytes and applied potentials near the flat band potential on the CPE behavior of TiO2 film electrode were studied in electrolyte solution by using A.C. impedance spectra. It was found that concentration of KNO3 had a significant effect on the CPE exponent n only when the concentration is smaller than 0.1 mol· L- 1. In this concentration range, the CPE exponent n went up with increase of KNO3 concentration, once the concentration was larger than this value, however, the CPE exponent n approached to a constant, irrelevant of the concentration. Near the flat band potential, the influence of applied potential on the exponent n depended on the selected frequency range. When the frequency was in lower range, that is smaller than 0.1 Hz, this influence was obvious,on the other hand, it bore no relation to applied potential in higher frequency. Types of electrolytes only affected the CPE constant Q, having nothing to do with the CPE exponent n. 展开更多
关键词 二氧化钛 恒相位元 膜电极 溶液界面 电解液 电化学交流阻抗谱 电极反应过程
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部