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阀控铅酸蓄电池正极板栅的电化学行为
任晴晴，王江林"23，马永泉2，沈浩宇23，伊廷锋123”，诸荣孙
（1.安徽工业大学化学与化工学院，安徽马鞍山243002，2.超威电源有限公司，浙江长兴313100：
3.哈尔滨工业大学化工学院，黑龙江哈尔滨150001）
摘要：采用循环伏安曲线、电化学阻抗谱和Tafel曲线研究了间控铅酸蓄电池正极板栅的电化学行为。不同扫描速度下的循环伏安曲线表明，扫描速度增加，体系的可逆性逐渐变差，峰值电流随扫描速度增大而升高。不同温度下循环伏安曲线表明，随着温度的升高，析氢量和析氧量逐渐增多，氧化峰与还原峰的峰值电流随温度升高而增大，电化学极化减小。电化学阻抗谱表明，板栅的耐腐蚀性和电导率与电荷转移电阻有关。Tafel曲线表明，高温时效工艺的正板板橱更容易腐蚀。
关键词：铅酸蓄电池；正极板栅；电化学行为；耐腐蚀性；高温时效
中图分类号：TM912.9
文献标识码：A
文章编号：1006-0847(2013)06-256-04
Electrochemical behavior of positivegrid of VRLAbattery REN Qing-qing',WANG Jiang-lin23,MAYong-quan,SHEN Haoyu23,YI Ting-feng2.3
ZHU Rong-sun
(I.School ofChemistry andChemical Engineering.Anhui Universityof Technology,Ma'anshan Anhui
243002; 2. Chilwee Power Co., Ltd., Changxing Zhejiang 313100, 3. School of Chemical Engineering,HarbinInstituteofTechnology,HarbinHeilongjiangI50001,China)
Abstract: The electrochemical behavior of positive grids of VRLA batteries is investigated by cyclic voltammograms (CV), electrochemical impedance spectroscopy (EIS) and Tafel curves. CV curves with different scanning rates show that the reversibility of the system decreases due to the increased scanning rates. The peak current increases with increasing of scanning rates. CV curves at different temperatures reveal that the evolution of hydrogen and oxygen increases gradually as a result of temperature increasing. However, the currents of oxidation and reduction peaks increase, and the electrochemical polarization decreases. Electrochemical impedance spectroscopy (EIS) shows that the corrosion resistance and electrical conductivity of the grids are related to the charge transfer resistance Tafel curves exhibit that positive grids with high temperature age hardening are easier to be corroded. Key words: lead-acid battery; positive grid; eiectrochemical behavior; corrosion resistance; high
temperatureaging 收稿日期：2013-07-26
基金项目：中国博士后科学基金（2012M520749）：浙江省博士后科研择优资助项目（BSh1201013）：安微工业大学
创新团队（CTD201202）资助项目
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