摘要
采用氨基碳纳米管制备锌电积用惰性阳极材料,研究氨基碳纳米管掺杂铅基阳极材料在锌电积过程中的析氧行为。研究结果表明:随着复合阳极材料中氨基碳纳米管掺杂量的增加,电极的电化学催化活性逐渐增强,在模拟工业锌电积条件下,氨基碳纳米管掺杂量为0.2%(质量分数)的复合阳极材料的析氧电位比纯铅阳极材料的电位降低了100 mV以上,并比传统铅银合金阳极材料的电位低,其预估服役寿命较纯铅的约低10%。因此,使用碳纳米管制备的铅碳复合材料有望替代传统铅银合金阳极材料,从而为铅合金阳极材料的发展开辟新的途径。
The inert anode for zinc electrowinning was prepared using amino carbon nanotube for replacing silver in traditional lead-silver anode.The oxygen evolution of amino carbon nanotubes(CNTs)doped lead-based anode was investigated.The results show that the electrochemical catalytical performance increases with the increase of amino carbon nanotubes in the composite anode.Under the conditions of simulated industrial zinc electrowinning,the overpotential of 0.2%(mass fraction)amino carbon nanotubes doped lead-based anode is decreased by 100 mV compared to that of pure Pb anode,and a little less than that of traditional lead-silver anode.The predicated service life of amino carbon nanotubes doped lead-based anode is about 10%less than that of pure Pb anode.Therefore,it is possible to replace the traditional lead-silver anode by the carbon/lead composite based on CNTs and a new approach is provided for the development of Pb alloy anode.
作者
杨长江
张旭
赵吕兴
YANG Changjiang;ZHANG Xu;ZHAO Lüxing(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2021年第2期350-357,共8页
Journal of Central South University:Science and Technology
基金
国家自然科学基金资助项目(51664040)
昆明理工大学分析测试基金资助项目(2019T20080042,2019M20172202010)。
关键词
氨基碳纳米管
复合阳极材料
析氧行为
锌电积
amino carbon nanotubes
composite anode
oxygen evolution
zinc electrowinning
