Preparation of IrO<sub>2</sub>+MnO<sub>2</sub> coating anodes and their application in NaClO production

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

doi:10.1016/S1005-8850(08)60087-0

Volume 15 Issue 4

Aug. 2008

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International Journal of Minerals, Metallurgy and Materials > 2008 > 15(4): 461-467. > DOI: 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

Author Affilications

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

Received: 15 September 2007;

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Abstract

Abstract

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.
- iridium dioxide,
- manganese dioxide,
- sodium hypochlorite,
- chlorine evolution,
- stability,
- impedance spectroscopy measurement （EIS）

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[1]	Li-ning Xu, Jin-yang Zhu, Min-xu Lu, Lei Zhang, Wei Chang. Electrochemical impedance spectroscopy study on the corrosion of the weld zone of 3Cr steel welded joints in CO₂ environments [J]. International Journal of Minerals, Metallurgy and Materials, 2015, 22(5): 500-508. DOI: 10.1007/s12613-015-1099-6
[2]	Wu-bin Gao, Yun-han Ling, Xu Liu, Jia-lin Sun. Simple point contact WO₃ sensor for NO₂ sensing and relevant impedance analysis [J]. International Journal of Minerals, Metallurgy and Materials, 2012, 19(12): 1142-1148. DOI: 10.1007/s12613-012-0683-2
[3]	Zhi-jun Jia, Cui-wei Du, Cheng-tao Li, Zou Yi, Xiao-gang Li. Study on pitting process of 316L stainless steel by means of staircase potential electrochemical impedance spectroscopy [J]. International Journal of Minerals, Metallurgy and Materials, 2011, 18(1): 48-52. DOI: 10.1007/s12613-011-0398-9
[4]	Xue-qun Cheng, Cheng-tao Li, Chao-fang Dong, Xiao-gang Li. Constituent phases of the passive film formed on 2205 stainless steel by dynamic electrochemical impedance spectroscopy [J]. International Journal of Minerals, Metallurgy and Materials, 2011, 18(1): 42-47. DOI: 10.1007/s12613-011-0397-x
[5]	Yue-hui Yang, Qing-wu Cai, Di Tang, Hui-bin Wu. Precipitation and stability of reversed austenite in 9Ni steel [J]. International Journal of Minerals, Metallurgy and Materials, 2010, 17(5): 587-595. DOI: 10.1007/s12613-010-0361-1
[6]	Jianhua Liu, Xin Liang, Songmei Li. Effect of sulphate-reducing bacteria on the electrochemical impedance spectroscopy characteristics of 1Cr18Ni9Ti [J]. International Journal of Minerals, Metallurgy and Materials, 2007, 14(5): 425-430. DOI: 10.1016/S1005-8850(07)60084-X
[7]	Hua Zhu, Shirong Ge, Xiaolong Huang, Sumei Dai. Experimental study of a technique for load measurement of powered supports [J]. International Journal of Minerals, Metallurgy and Materials, 2004, 11(6): 489-493.
[8]	Yinglv Jiang, Yinshun Wu, Hong Chu. An improvement to the data processing course of electrochemical impedance technique [J]. International Journal of Minerals, Metallurgy and Materials, 2003, 10(6): 57-60.
[9]	Qiang Shen, Lianmeng Zhang, Hua Tan, Fuqian Jing. Wave impedance of W-Mo system composite [J]. International Journal of Minerals, Metallurgy and Materials, 2003, 10(5): 35-38.
[10]	Jingshe Li, Yanhui Sun, Shiqi Li, Guoqiang Ling, Hua Sun, Xiang Li. Improvement of power input for steelmaking process in high impedance EAF [J]. International Journal of Minerals, Metallurgy and Materials, 2002, 9(3): 181-184.