电池2012，Vol.42Issue(6)：302-305,4.
石墨/LiFePO4电池高温储存后的性能
Performance of graphite/LiFePO4 battery after high temperature storage
摘要
Abstract
The performance of graphite/lithium iron phosphate( LiFePO4) battery after stored at high temperature (55 ± 2℃) was studied. During stored in 25% ~ 75% state of charge (SOC), the capacity of both the battery and the LiFePO4 electrodes slightly increased firstly and then decreased. When the capacity went up to the maximum, the impedance of the LiFePO4 electrode decreased with its kinetic characteristics improved, mainly contribute to the overall changing of performance. The reason was the difference in the cell volume of LiFePO4 and FePO4 caused the internal stress in the structure when stored in delithiated, which led to the partical splitting of the two phases,some fresh surface emerged.关键词
锂离子电池/磷酸铁锂(LiFePO4)/储存/晶胞体积Key words
Li-ion battery/ lithium iron phosphate(LiFePO4)/ storage/ cell volume分类
信息技术与安全科学引用本文复制引用
李佳,廖文俊,曾乐才,夏保佳..石墨/LiFePO4电池高温储存后的性能[J].电池,2012,42(6):302-305,4.基金项目
国家自然科学基金(20773157),上海市自然科学基金(09ZR1437600),中国科学院院地合作项目(DBSH-2011-009) （20773157）
