Study on Electrocatalytic Properties for Oxygen Evolution of Ti/IrO_2-Ta_2O_5 Anodes with Different Ir Contents

Authors

Yong-lei XIN, State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute,Qingdao 266071,Shandong,China;
Li-kun XU, State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute,Qingdao 266071,Shandong,China;
Jun-tao WANG, State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute,Qingdao 266071,Shandong,China;

Abstract

The anodes of Ti/IrO2-Ta2O5 were prepared by Pechini method. The effects of coating loading on the surface morphology and electrochemical properties of the anodes were characterized by scanning electron microscope ( SEM) ,energy dispersive X-ray detector ( EDX) ,potentiodynamic polarization,cyclic voltammetry and accelerated life test. The results indicate that with the increase of the coating loading,the oxide anode presents evident IrO2 crystallite segregation,and cracks become narrow and shallow. Moreover,it has larger electrochemically active surface area,better electrocatalytic activity for oxygen evolution and higher stability. It was observed that for an iridium content of 1. 98 ～ 9. 08 g/m2 the service life is almost proportional to the iridium content in the coating.

Keywords

cathodic protection, oxide anode, pechini method, IrO2, Ta2O5

DOI Link

https://doi.org/10.61558/2993-074X.3345

Publication Date

2010-05-28

Online Available Date

2010-05-28

Revised Date

2010-05-28

Received Date

2010-05-28

Recommended Citation

Yong-lei XIN, Li-kun XU, Jun-tao WANG. Study on Electrocatalytic Properties for Oxygen Evolution of Ti/IrO_2-Ta_2O_5 Anodes with Different Ir Contents[J]. Journal of Electrochemistry, 2010 , 16(2): Article 17.
DOI: 10.61558/2993-074X.3345
Available at: https://jelectrochem.xmu.edu.cn/journal/vol16/iss2/17