Electro catalytic activity for oxygen evolution of titanium based IrO2+Ta2O5 anodes

被引：0
|
作者：
Hu, JM [1 ]
Meng, HM
Zhang, JQ
Wu, JX
Yang, DJ
Ca, CN
机构：
[1] Zhejiang Univ, Dept Chem, Electrochem Lab, Hangzhou 310027, Peoples R China
[2] Univ Sci & Technol Beijing, Beijing Corros & Protect Ctr, Beijing 100083, Peoples R China
[3] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
来源：
ACTA METALLURGICA SINICA | 2001年 / 37卷 / 06期
关键词：
oxide anode; IrO2; Ta2O5; oxygen evolution; electrocatalytic activity;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The electrocatalytic activity of titanium based IrO2+Ta2O5 anodes for oxygen evolution has been investigated by polarization and electrochemical impedance spectroscopy (EIS) techniques. It was shown that the mixed oxide anodes exhibited the highest activity at 70% (mole fraction) IrO2 content. Th-is result was interpreted by the maximum surface concentration of active component IrO2 with the corresponding composition and by the most significant increase of the amount of surface active site after attacking by the evaluated oxygen. Accordingly, the thermodynamic and kinetic criterions determining the electrocatalytic activity of oxide anodes for oxygen evolution have been proposed.
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页码：628 / 632
页数：5
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