氧化铝作为处理剂在锂离子电池中的应用  

Application of aluminum oxide as treatment agent in Li-ion battery

作　　者：陈思敏 吴春蕾 段先健 郑育英[1] CHEN Si-min;WU Chun-lei;DUAN Xian-jian;ZHENG Yu-ying(School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou,Guangdong 510006,China;Guangzhou Huifu Research Institute Co.,Ltd.,Guangzhou,Guangdong 510000,China)

机构地区：[1]广东工业大学轻工化工学院,广东广州510006 [2]广州汇富研究院有限公司,广东广州510000

出　　处：《电池》2023年第6期647-651,共5页Battery Bimonthly

摘　　要：为提高LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)材料的循环稳定性,以氧化铝(Al_(2)O_(3))为电解液处理剂,用一种简单的方法制备功能性电解液,研究对NCM材料的性能影响。与原始NCM相比,在电解液中添加0.50%Al_(2)O_(3)的NCM以0.5 C在2.75~4.30 V循环200次的容量衰减更慢,容量保持率为80.33%,同时电荷转移电阻(R_(ct))增加趋势较低。SEM分析表明,正极表面仍可看出清晰的颗粒轮廓与层状结构。In order to improve the cycle stability of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)material,a simple method was used to prepare functional electrolyte with aluminum oxide(Al_(2)O_(3))as the electrolyte treatment agent,its effect on the performance of NCM material was studied.Compared with the original NCM,the NCM with 0.50%Al_(2)O_(3)added to the electrolyte in 2.75-4.30 V at 0.5 C for 200 cycles,the capacity decay was slower,the capacity retention rate was 80.33%,the charge transfer resistance(R_(ct))increase trend was lower.The SEM analysis showed that clear particle profile and layered structure could still be seen on the cathode surface.

关 键 词：锂离子电池 富镍层状正极 氧化铝(Al_(2)O_(3)) LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811) 电解液 

分 类 号：TM912.9[电气工程—电力电子与电力传动]