A novel CF/Ti/β-PbO2 composite anode for zinc electrowinning: preparation, electrochemical properties and application

被引：15
作者：
Hu, Changyu [1 ]
Liu, Jianhua [1 ,2 ]
Zhang, Man [1 ]
Zeng, Siya [1 ]
Guo, Shenghui [1 ]
Xu, Lei [1 ]
Yu, Lingfei [3 ]
机构：
[1] Energy Engn Kunming Univ Sci & Technol, Fac Met, Kunming 650093, Peoples R China
[2] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cle, Kunming 650093, Peoples R China
[3] Zinc & Indium smelting Co Ltd, Wenshan Yunxi 663700, Wenshan, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2023年 / 11卷 / 03期
关键词：
TITANIUM HYDRIDE; OXYGEN EVOLUTION; THERMAL-DECOMPOSITION; CURRENT-DENSITY; SULFURIC-ACID; PERFORMANCE; OXIDATION; KINETICS; ALLOY; PASSIVATION;
D O I：
10.1039/d2ta08189j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ti and beta-PbO2 coatings were successfully deposited on carbon fiber substrates by thermal decomposition and electrodeposition, and the electrochemical properties of CF/Ti/beta-PbO2 composite anodes were studied in detail. The properties of titanium metal were studied via the pyrolysis of titanium hydride, and the effects of different temperatures and titanium hydride contents on carbon fiber-titanium composites as matrix materials were studied. The Ti interlayer exhibited excellent catalytic activity and electrical conductivity. The Ti interlayer plays a very important role in improving the stability of the PbO2 coating and the corrosion resistance of the CF/Ti/beta-PbO2 composite anode. In comparison with the traditional lead-silver alloy anode, its electrolysis current efficiency increased by 14.92%. The corrosion rate of the CF/Ti/beta-PbO2 composite anode was only 1/60 of that of the Pb-Ag anode, while its service life was 3.32 times that of the Pb-Ag anode, and 22.91 kW h per ton can be saved when electrolyzing zinc.
引用
收藏
页码：1403 / 1418
页数：16
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