本文利用交流阻抗和直流极化的电化学方法,比较了200~500℃氧在Pt、Ag、Au、Ag-Pd四种化学镀电极上的扩散,350~600℃氧在金属电极/YSZ界面的电化学反应速度以及阴阳电荷传递系数;计算了350~600℃四种电极的界面阻抗;研究了400℃时O2在Ag-Pd电极界面的交换电流密度Io与氧分压Po2的定量关系.
A-C Impedance spectroscopy and steady-state D-C polarization have been investigated tocompare oxygen diffusion on Pt, An, Ag, Ag-Pd four pasted electrodes and electrochemical reactionrate from 200℃ to 600℃. Electrode interface impedance has been calculated in the temperaturerange of 350-600℃. Experiments confirm the relationship of the exchange current density Io asa function of oxygen partial pressure P0.67±0.1O2
参考文献
[1] | Alock C B. Solid State Ionics, 1992, 53-56: 3--17 2 张仲生.等离子固体电解质浓差电池与测氧技术,北京: 原子能出版社,1983 3 Okamoto H. Solid State Ionics, 1980, 1: 319--326 4 Anderson J E. J. Electrochem. Soc., 128: 294--299 5 孙成文(SUN Cheng-Wen). 无机材料学报(Journal of Inorganic Materials),1996, 11 (1): 123--130 6 Van Hassel B A. Solid State Ionics, 1991, 48: 139--154, 155--171 7 Da Yu Wang. Solid State Ionics, 1990, 40/41: 849--856 8 Verkerk M J. J. Electrochem. Soc., 130 (1): 70--84 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%