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.
出处
《电源技术》
CAS
CSCD
北大核心
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)
关键词
铜集流体
过放电
氢镍电池
循环伏安
copper grid
over-discharge
nickel hydrogen battery
cyclic voltammetry
