高倍率长寿命锂离子电池的研究  

Research of high-rate and long-life lithium-ion batteries

作　　者：冉昕昕 王鑫怡 甘潦 王储 RAN Xinxin;WANG Xinyi;GAN Liao;WANG Chu(Guizhou Meiling Power Co.,Ltd.,Zunyi Guizhou 563000,China;College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Unit 93147,Zunyi Guizhou 563003,China)

机构地区：[1]贵州梅岭电源有限公司,贵州遵义563000 [2]北京化工大学材料科学与工程学院,北京100029 [3]空军93147部队,贵州遵义563003

出　　处：《电源技术》2025年第3期540-542,共3页Chinese Journal of Power Sources

摘　　要：对普通人造石墨和中间相炭微球两种负极材料进行了对比研究。分别将普通人造石墨和中间相炭微球搭配相同三元正极材料制成全电池,发现中间相炭微球具有更好的倍率性能和循环性能,其中10 C倍率放电容量保持率大于98%,1 C循环500次容量保持率>95%。同时还测试了两种电池的低温放电性能,其中,中间相炭微球电池在-40℃下放电容量保持率大于78%,而普通人造石墨只有约64%。中间相炭微球电池可同时满足高功率、长循环、低温电池等应用需求。Two types of anode materials,artificial graphite and mesophase carbon microspheres,were compared.The full cell was made by combining ordinary artificial graphite and mesophase carbon microspheres with the same ternary cathode material,and it was found that the mesophase carbon microspheres had better rate performance and cycling performance,among which the retention rate of 10 C rate discharge capacity was greater than 98%,and the capacity retention rate of 1 C cycle for 500 cycles was>95%.At the same time,the low-temperature discharge performance of the two batteries were also tested,among which the discharge capacity retention rate of the mesophase carbon microsphere battery was greater than 78%at-40℃,while the average artificial graphite was only about 64%.Mesophase carbon microsphere cells can meet the needs of high-power,long-cycle,low-temperature batteries and other applications at the same time.

关 键 词：锂离子电池 中间相炭微球 长寿命 

分 类 号：TM912[电气工程—电力电子与电力传动]