Pt／YSZ固体电解质界面氧的电荷传递过程研究

电化学（中英文） ›› 1996, Vol. 2 ›› Issue (2): 156-163.

Pt／YSZ固体电解质界面氧的电荷传递过程研究

江义,李文钊,阎景旺,王世忠

中国科学院大连化学物理研究所

收稿日期:1996-05-28 修回日期:1996-05-28 出版日期:1996-05-28 发布日期:1996-05-28

Oxygen Charge transfer reaction at the Pt/YSZ interface

Jiang Yi Li Wenzhao Yan Jingwang Wang Shizhong

(Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023

Received:1996-05-28 Revised:1996-05-28 Published:1996-05-28 Online:1996-05-28

摘要/Abstract

摘要： 用极化法研究了不同温度和氧分压下Ｐｔ／ＹＳＺ界面氧的电荷传递过程．研究发现氧电荷传递过程的阴、阳极电荷传递系数为１，不随温度和氧分压而变．从实验和反应机理推导得到，Ｐｔ／ＹＳＺ界面的交换电流密度和氧分压之间存在，ｉ０＝２ＦＫｒ（ＫＯ２ＰＯ２）１／４（１＋ＫＯ２ＰＯ２）１／２的关系．通过数学分析还获电化学反应速度常数，氧在Ｐｔ表面上吸附平衡常数等重要参数

关键词: Pt电极, YSZ固体电解质

Abstract: Oxygen Charge transfer reaction has been investigated by various degrees of potential polarization at the Pt/YSZ interface. Anodic and cathodic charge transfer coefficients were found to be unity over the wide range of oxygen partial pressures and temperatures. While the exchange current density of the interface was found dependent on the partial pressure of oxygen in accordance with the relation: i 0=2FK r(K O 2 P O 2 ) 1/4 (1+K O 2 P O 2 ) 1/2 . Several important parameters, such as electrochemical rate constant, equilibrium constant of oxygen adsorption on Pt surface had also been extracted.

Key words: Pt electrode, YSZ solid electrolyte, Oxygen charge transfer reaction.

中图分类号:

O646.1

江义,李文钊,阎景旺,王世忠. Pt／YSZ固体电解质界面氧的电荷传递过程研究[J]. 电化学（中英文）, 1996, 2(2): 156-163.

Jiang Yi Li Wenzhao Yan Jingwang Wang Shizhong . Oxygen Charge transfer reaction at the Pt/YSZ interface[J]. Journal of Electrochemistry, 1996, 2(2): 156-163.

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https://electrochem.xmu.edu.cn/CN/Y1996/V2/I2/156

参考文献

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