Preparation of IrO2+MnO2 coating anodes and their application in NaClO production

Yongle Ni, Huimin Meng, Dong Chen, Dongbai Sun, Hongying Yu

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    Yongle Ni, Huimin Meng, Dong Chen, Dongbai Sun, and Hongying Yu, Preparation of IrO2+MnO2 coating anodes and their application in NaClO production, J. Univ. Sci. Technol. Beijing , 15(2008), No. 4, pp.461-467. https://dx.doi.org/10.1016/S1005-8850(08)60087-0
    Yongle Ni, Huimin Meng, Dong Chen, Dongbai Sun, and Hongying Yu, Preparation of IrO2+MnO2 coating anodes and their application in NaClO production, J. Univ. Sci. Technol. Beijing , 15(2008), No. 4, pp.461-467. https://dx.doi.org/10.1016/S1005-8850(08)60087-0
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    Materials

    Preparation of IrO2+MnO2 coating anodes and their application in NaClO production

    • School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

      通信作者:

      Yongle Ni E-mail: nyl_ustb@126.com

    中文摘要

    To improve the durability as well as to reduce the cost of anodes, the IrO2+MnO2 composite coating anodes for NaCIO production were prepared by thermal decomposition. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction analysis (XRD) were carried out to investigate the morphologies, element distribution, and microstructure. The anodic polarization curves were employed to study the effect of sintering temperature on the Cl2 evolution reaction (CER) of the electrodes. The accelerated life tests (ALT) and electrochemical impedance spectroscopy measurement (EIS) were utilized to investigate the stability. The rules of NaCIO production were also studied by the static electrolysis experiment. The results indicate that sintering temperature has a significant influence on the CER properties as well as the ALT values of the electrodes. The electrode prepared at 400℃ has the best CER properties and the longest ALT value.

     

    Materials

    Preparation of IrO2+MnO2 coating anodes and their application in NaClO production

    Author Affilications

      • School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

    • Received: 15 September 2007;
    To improve the durability as well as to reduce the cost of anodes, the IrO2+MnO2 composite coating anodes for NaCIO production were prepared by thermal decomposition. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray diffraction analysis (XRD) were carried out to investigate the morphologies, element distribution, and microstructure. The anodic polarization curves were employed to study the effect of sintering temperature on the Cl2 evolution reaction (CER) of the electrodes. The accelerated life tests (ALT) and electrochemical impedance spectroscopy measurement (EIS) were utilized to investigate the stability. The rules of NaCIO production were also studied by the static electrolysis experiment. The results indicate that sintering temperature has a significant influence on the CER properties as well as the ALT values of the electrodes. The electrode prepared at 400℃ has the best CER properties and the longest ALT value.

     

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