热分解温度对IrO_(2)-RuO_(2)-SnO_(2)/Ti阳极微观形貌及性能的影响  

Effect of Thermal Decomposition Temperature on Microscopic Morphology and Performance of IrO_(2)-RuO_(2)-SnO_(2)/Ti Anode

作　　者：杨文秀 王冰冰 俞小花[1] 田林 谢刚[1,2,3] YANG Wenxiu;WANG Bingbing;YU Xiaohua;TIAN Lin;XIE Gang(Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Kunming Metallurgical Research Institute,Kunming 650503,China;State Key Laboratory of Common Associated Non-ferrous Metal Resources Pressure Hydrometallurgy Technology,Kunming 650503,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]昆明冶金研究院有限公司,昆明650503 [3]共伴生有色金属资源加压湿法冶金技术国家重点实验室,昆明650503

出　　处：《材料导报》2024年第24期6-10,共5页Materials Reports

基　　金：国家自然科学基金(51774160);云南省重大科技专项(2018ZE002);云南省科技人才和平台计划项目(2017HA012);中央引导地方科技发展资金(202107AA110005)。

摘　　要：湿法炼锌过程的锌电积中,对阳极的性能要求很高,完全采用贵金属涂层制备钛阳极的成本非常高昂,因此,在制备贵金属涂层钛阳极时,通常需要在涂层中添加少量的其他低成本催化金属元素,以达到合适的催化效果。本工作采用热分解法制备了IrO_(2)-RuO_(2)-SnO_(2)/Ti阳极,分析了不同温度下IrO_(2)-RuO_(2)-SnO_(2)/Ti阳极涂层的表面形貌、微观结构以及电化学性能。结果表明,当温度为450℃时,涂层表面最致密,晶粒尺寸相对较小,阳极催化活性、耐腐蚀性能最强,析氧电位低至0.882 V,有利于延长阳极的使用寿命,此时IrO_(2)-RuO_(2)-SnO_(2)/Ti阳极的综合性能最好。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,IrO_(2)-RuO_(2)-SnO_(2)/Ti anodes were prepared by thermal decomposition method.The surface morphology,microstructure and electrochemical properties of the IrO_(2)-RuO_(2)-SnO_(2)/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 IrO_(2)-RuO_(2)-SnO_(2)/Ti anode was the best.

关 键 词：钛阳极 铱钌锡涂层 硫酸溶液 析氧催化 电化学性能 

分 类 号：TQ150.1[化学工程—电化学工业]