热分解温度对IrO2-RuO2-SnO2/Ti阳极微观形貌及性能的影响

doi:10.11896/cldb.23080117

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Abstract In the zinc electrowinning of wet zinc refining process, the performance requirements of anode is very high, and the cost of preparing titanium anode completely with precious metal coating is very high, therefore, when preparing precious metal coated titanium anode, it is usually necessary to add a small amount of other low-cost catalytic metal elements in the coating to achieve a suitable catalytic effect. In this work, IrO₂-RuO₂-SnO₂/Ti anodes were prepared by thermal decomposition method. The surface morphology, microstructure and electrochemical properties of the IrO₂-RuO₂-SnO₂/Ti anode coatings at different temperatures were analysed. The results showed that, when the temperature was 450 ℃, the surface of the coating is the most dense, the grain size was relatively small, the catalytic activity and corrosion resistance of the anode were the strongest, and the oxygen precipitation potential was as low as 0.882 V, which was conducive to prolonging the service life of the anode, and the comprehensive performance of IrO₂-RuO₂-SnO₂/Ti anode was the best.

Key words： titanium anode iridium-ruthenium-tin coating sulphuric acid solution oxygen precipitation catalysis electrochemical performance

Published: 25 December 2024 Online: 2024-12-20

CLC number:

TQ 150.1

Fund:National Natural Science Foundation of China (51774160), Major Science and Technology Special Project of Yunnan Province (2018ZE002), Yunnan Science and Technology Talent and Platform Programme Project (2017HA012), and Central Guided Local Science and Technology Development Funds (202107AA110005).

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	Articles by authors
	YANG Wenxiu
	WANG Bingbing
	YU Xiaohua
	TIAN Lin
	XIE Gang

Cite this article:

YANG Wenxiu,WANG Bingbing,YU Xiaohua, et al. Effect of Thermal Decomposition Temperature on Microscopic Morphology and Performance of IrO₂-RuO₂-SnO₂/Ti Anode[J]. Materials Reports, 2024, 38(24): 23080117-5.

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http://www.mater-rep.com/EN/10.11896/cldb.23080117 OR http://www.mater-rep.com/EN/Y2024/V38/I24/23080117

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