β-PbO_2电镀液中Fe^(3+)含量对PbO_2电极电化学行为及性能的影响  

Influences of Fe^(3+) Content in PbO_2 Electrode Plating Solution on Electrochemical Behavior and Properties of Electrode

作　　者：张璋[1] 陈步明[1,2] 宋爽 王腾[1] 黄惠 郭忠诚[1,2] 徐瑞东 金炳界[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]昆明理工恒达科技股份有限公司,云南昆明650106

出　　处：《材料保护》2017年第8期9-13,共5页Materials Protection

基　　金：国家自然科学基金(51564029;51504111;51504231;51364019);高等学校博士学科点专项科研基金资助(20125314110011);云南省应用基础研究计划重点项目(2014FA024)

摘　　要：为了探讨低成本高稳定性钛基二氧化铅电极的制备工艺,研究该电极在锌电积液中的电化学性能,在制备β-PbO_2镀层的溶液中加入了有助于镀液稳定的主盐成分Fe^(3+)且使其不被消耗。使用扫描电镜(SEM)研究了β-PbO_2镀层的表面形貌,使用X射线衍射仪(XRD)分析了镀层的晶体物相组成,采用强化寿命测试和热震试验法研究了PbO_2电极的稳定性;在含不同浓度Mn^(2+)锌电解液中,通过阳极极化曲线(LSV)、循环伏安曲线(CV)和交流阻抗谱(EIS)研究了PbO_2电极的电化学行为。结果表明:镀液中掺杂Fe^(3+)获得的β-PbO_2镀层表面均匀致密,不存在明显的铁氧化物;当锌电解液中Mn^(2+)浓度为4 g/L时,PbO_2电极表现出了最优的电催化活性。In order to explore the preparation process of high-stability and low-cost titanium base lead dioxide electrode and study the electrode electrochemical performance in the zinc electric fluid,doping Fe3＋ into the plating solution of preparation for β-PbO2 layer was conducive to stabilize the main salt components of plating solution with no consumption of Fe3＋.With the conclusion confirmed by experiment,the β-PbO2 layer with excellent electrochemical performance and mechanical properties was prepared on the Ti/Sb-SnO2 substrate.Moreover,the electrode surface morphology was analyzed by scanning electron microscopy （SEM）,and the crystal phase composition of coating was analyzed by X-ray diffractometer （XRD）.Moreover,and the stability of the electrodes was studied by enhanced life test and thermal shock test.In zinc electrolyte solution with various Mn2＋ concentration,anodic polarization curves （LSV）,cyclic voltammetric curves （CV） and alternative current impedance spectroscopy （EIS） were used to analyze the electrochemical behavior of the electrode.Results showed that the coating of electrode prepared in the solution of doped Fe3＋ was uniform and dense,and some inapparent iron oxides existed.When Mn2＋ content in zinc electrolyte was 4 g/L,the electrode performed the best electro-catalytic activity.

关 键 词：电镀β3-PbO2 PBO2电极 FE3+ 电化学行为 析氧过电位 交流阻抗谱 

分 类 号：TQ153[化学工程—电化学工业]