摘要
采用D50为10μm的中间相碳微球（MCMB）、D50为10μm的层状石墨和D50为15μm的层状石墨制备实验电池，并研究了电池的性能。在2．5—3．7V循环，MCMB、D50为10μm的层状石墨和D50为15μm的层状石墨制备的电池的5．0C放电容量保持率分别为95．6％、94．2％和91．3％；1．0C充电、3．0C放电、100％放电深度（DOD）循环1600次的容量保持率分别为85．6％、84．4％和80．4％。同等粒径下，球形的MCMB相对于层状石墨有较好的倍率及循环性能；相同形貌下，粒径较小的石墨具有较好的倍率及循环性能。
Experimental battery was prepared by using mesocarbon microbeads （MCMB ,D50 = 10 μm）,layered graphite （D50 = 10 μm） and layered graphite （D50 = 15 μm） ,the performance of the battery was studied. When cycled in 2. 5 -3.7 V,the 5.0 C discharge capacity retention of battery prepared with MCMB,layered graphite of Ds0 = 10 μm and layered graphite of D50 = 15 μm were 95.6% ,94. 2% and 91.3%, respectively, capacity retention was 85.6%, 84. 4% and 80. 4% when cycled 1 600 times with 1.0 C charge ,3.0 C discharge, 100% depth of discharge（DOD）. In the same particle size, MCMB had better rate and cycle performance compared with layered graphite;in the same shape, graphite with small particle size had better rate and cycle performance.
出处
《电池》
CAS
CSCD
北大核心
2014年第3期171-173,共3页
Battery Bimonthly
关键词
锂离子动力电池
倍率
形貌
粒径
power Li-ion battery
rate performance
shape
particle size
