摘要
VRLA电池普遍存在容量下降快、循环使用寿命稍短的缺点。对高倍率循环实验失效电池正极粉末进行了XRD、SEM分析及循环伏安测试,认为失效主要模式为正极活性物质软化脱落,造成活性物质失去部分活性及导电性。
VRLA battery?had such shortages: rapid decline on capacity during deep cycles and comparatively short service life.The positive powder of failed battery after high rate cyclic was tested by XRD, SEM and cyclic voltammetry methods.It was found that the major failure mode was the softening and shedding of positive material, which eventually resulted in the deactivation of active material and deterioration of conductivity.
出处
《电池》
CAS
CSCD
北大核心
2004年第5期342-343,共2页
Battery Bimonthly
基金
广东省自然科学基金(031533)
广东省重点教师资助项目(Q02088)
关键词
VRLA电池
高倍率循环
失效机理
软化脱落
活性物质
VRLA battery
high rate cyclic
failure mechanism
softening and shedding
active material
