铜网在MH/Ni电池放电中的电化学行为  

Electrochemical behavior of copper gird in negative electrode during discharge of Ni-MH battery

作　　者：夏同驰[1] 李晓峰[1] 董会超[1] 王瑞 

机构地区：[1]郑州轻工业学院材料与化工学院河南省表界面科学重点实验室,河南郑州450002 [2]江苏赛尔电池有限公司技术部,江苏金湖211600

出　　处：《电源技术》2013年第1期83-85,共3页Chinese Journal of Power Sources

基　　金：河南省科技攻关项目(102102210140);河南省教育厅科技攻关项目(2010A530011)

摘　　要：运用循环伏安和恒电流充放电实验研究了铜作为负极集流体在氢镍电池放电过程中的电化学行为。结果表明,在电池正常放电及浅度过放电的电压范围内,负极的铜不发生电化学氧化,基本是稳定的;但在电池深度过放电(放至-0.95 V以下)时,铜将发生电化学氧化,导致电池容量和放电平台均明显下降,充电平台上升。The electrochemical behaviors of copper grid in negative electrode during the discharge of nickel metal-hydride（Ni-MH）battery were studied by using cyclic voltammetry and galvanostatic charge-discharge tests.The results show that copper is stable in the negative electrode during the normal charge-discharge and low over-discharge voltage range,but it could be oxidized during deep over-discharge voltage range（below-0.95 V）,thus resulting in a decline on discharge capacity and platform of the battery.

关 键 词：铜集流体 过放电 氢镍电池 循环伏安 

分 类 号：TM912.2[电气工程—电力电子与电力传动]