摘要
实验在72h恒电流电解过程中,通过暂稳态极化曲线测试方法,在酸性硫酸锌溶液中研究了Pb-0.3%Ag-0.6%Sb-0.06%Ca四元合金阳极的电化学性能,并分析了析氧动力学参数。结果表明,在电解过程中,阳极析氧过电位和析氧动力学参数发生很大的变化,这是因为阳极氧化层存在一个形成与稳定的过程。随着电解时间的延长,阳极材料的析氧过电位呈现不断降低的趋势,电极表面交换电流密度呈现逐渐升高的趋势。
Electrochemical behaviors and oxygen evolution kinetics of Pb-0.3% Ag-0.6% Sb-0.06% Ca quaternary alloy anode during 72 hours electrolysis in acid zinc sulphate electrolyte solution were investi- gated with Quasi-stationary polarization （Tafel） techniques. Results reveal that anodic oxygen evolution overpotential and reaction kinetics change a lot during the electrolysis because it is a process of formation and stabilization of anodic oxide layer. With electrolysis time increasing, overpotentials of oxygen evolution mainly presents a declining trend while electrode surface exchanze current de^n~itv t~ ~ ~; ..1
出处
《电镀与精饰》
CAS
北大核心
2014年第2期33-35,共3页
Plating & Finishing
基金
国家自然科学基金(51004056)
中国科学院特种无机涂层重点实验室开放基金KKZ6201152009
高等学校博士学科点专项科研基金资助课题(No.20125314110011)
云南省应用基础研究基金(2010ZC052和2013FA012)
昆明理工大学分析测试基金(2011173)
关键词
Pb-Ag-Sb-Ca合金阳极
暂稳态极化曲线
析氧动力学
锌电积
Pb-0.3% Ag-0.6% Sb-0.06% Ca alloy anode
quasi-stationary polarization curve
oxygenevolution kinetics
zinc electrowinning
