Corrosion resistance mechanism of a novel porous Ti/Sn-Sb-RuOx/β-PbO2 anode for zinc electrowinning

被引：69
作者：
Chen, Buming [1 ,2 ]
Wang, Shichuan [1 ]
Liu, Jianhua [3 ]
Huang, Hui [1 ,2 ]
Dong, Cansheng [2 ]
He, Yapeng [1 ,2 ]
Yan, Wenkai [1 ]
Guo, Zhongcheng [1 ,2 ]
Xu, Ruidong [1 ,3 ]
Yang, Haitao [1 ]
机构：
[1] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
[2] Kunming Hengda Technol Co LTD, Kunming 650106, Yunnan, Peoples R China
[3] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China
来源：
CORROSION SCIENCE | 2018年 / 144卷
关键词：
Porous beta-PbO2 anode; Sn-Sh-EuOx interlayer; Electrocatalytic activity; Service life; Zinc electrowinning; ELECTROCHEMICAL DEGRADATION; OXYGEN EVOLUTION; PBO2; ELECTRODE; LEAD DIOXIDE; PHYSICOCHEMICAL PROPERTIES; O-2; EVOLUTION; PERFORMANCE; COMPOSITE; BEHAVIOR; MICROSTRUCTURE;
D O I：
10.1016/j.corsci.2018.08.049
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sn-SbOx, Sn-Sb-RuOx, and beta-PbO2 coatings were successfully deposited on a titanium substrate by using the thermal deposition and electrodeposition methods, and their electrochemical properties were investigated in detail. The Sn-Sb-RuOx interlayer played a very important role in enhancing the stability of the PbO2 coating electrodeposited at a low current density. The scanning electron microscopy results showed that the cracks in the Sn-Sb-RuOx coating were larger than those in the Sn-SbOx coating. Moreover, the Ti/Sn-Sb-RuOx/beta-PbO2 coating had many large pits with pore diameters in the range of 50-180 tun and pore depths of < 18.4 mu m. The electrodeposition mechanism of beta-PbO2 was investigated by cyclic voltammetry. Compared to the compact beta-PbO2 anode, the porous P-PbO2 anode showed superior electrocatalytic activity and electrochemical stability. A service life of 96 h was achieved for this anode under the accelerated-life-test conditions at a current density of 1 A/cm(2) in a solution of 150 g/L H2SO4 and 1 g/L Cl-.
引用
收藏
页码：136 / 144
页数：9
相关论文
共 54 条
[1]   Influence of the electrode history and effects of the electrolyte composition and temperature on O2 evolution at β-PbO2 anodes in acid [J].
Amadelli, R ;
Maldotti, A ;
Molinari, A ;
Danilov, FI ;
Velichenko, AB .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2002, 534 (01) :1-12
[2]   Fabrication and enhanced electrocatalytic activity of 3D highly ordered macroporous PbO2 electrode for recalcitrant pollutant incineration [J].
Chai, Shouning ;
Zhao, Guohua ;
Wang, Yujing ;
Zhang, Ya-nan ;
Wang, Yanbin ;
Jin, Yefei ;
Huang, Xiaofeng .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 147 :275-286
[3]   Electrosynthesis and physicochemical properties of α-PbO2-CeO2-TiO2 composite electrodes [J].
Chen, Bu-ming ;
Guo, Zhong-cheng ;
Xu, Rui-dong .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2013, 23 (04) :1191-1198
[4]   Stable Ti/RuO2-Sb2O5-SnO2 electrodes for O2 evolution [J].
Chen, XM ;
Chen, GH .
ELECTROCHIMICA ACTA, 2005, 50 (20) :4155-4159
[5]   Stable Ti/IrOx-Sb2O5-SnO2 anode for O2 evolution with low Ir content [J].
Chen, XM ;
Chen, GH ;
Yue, PL .
JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (20) :4623-4628
[6]   Phase Structure and Microstructure of a Nanoscale TiO2-RuO2-IrO2-Ta2O5 Anode Coating on Titanium [J].
Chen, Yong-yi ;
Zhang, Teng ;
Wang, Xin ;
Shao, Yan-qun ;
Tang, Dian .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (12) :4154-4157
[7]  
Cifuentes L., 2013, BR CORROS J, V46, P737
[8]   The influence of alloying elements on the electrochemistry of lead anodes for electrowinning of metals: A review [J].
Clancy, M. ;
Bettles, C. J. ;
Stuart, A. ;
Birbilis, N. .
HYDROMETALLURGY, 2013, 131 :144-157
[9]   Electrochemical Behaviour of Porous PbO2 Layers Prepared by Oxygen Bubble Templated Anodic Deposition [J].
Comisso, Nicola ;
Cattarin, Sandro ;
Guerriero, Paolo ;
Mattarozzi, Luca ;
Musiani, Marco ;
Verlato, Enrico .
ELECTROCHIMICA ACTA, 2016, 200 :259-267
[10]   Oxygen bubble-templated anodic deposition of porous PbO2 [J].
Comisso, Nicola ;
Cattarin, Sandro ;
Guerriero, Paolo ;
Mattarozzi, Luca ;
Musiani, Marco ;
Verlato, Enrico .
ELECTROCHEMISTRY COMMUNICATIONS, 2015, 60 :144-147
123456