阻燃剂对5Ah锂离子软包电池倍率性能和安全性能的影响研究  

Effects of Flame Retardant on the Rate Capability and Safety Performances of the Soft-Package 5Ah Lithium Ion Battery

作　　者：吕艳卓[1,2,3] 王霄鹤 秦一鸣 王振波[1] 柯克[1,3] LV Yan-zhuo WANG Xiao-he QIN Yi-ming WANG Zhen-bo KE Ke(School of Chemical Engineering and Technology, Harbin Institute of Technology, No.92 West-Da Zhi Street, Harbin, 150001 China College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001 China Chaowei Power Co., LTD, Changxing, 313100, Zhejiang, China)

机构地区：[1]哈尔滨工业大学化工学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001 [3]超威电源有限公司研究院,浙江长兴313100

出　　处：《电化学》2017年第1期80-85,共6页Journal of Electrochemistry

基　　金：国家自然科学基金项目(No.21203040);中国博士后面上项目(No.2014M561357);浙江省博士后科研项目择优资助资金(No.zj140288);黑龙江省自然科学基金项目(No.B201201)资助

摘　　要：在电解液中加入不同含量(5%,10%,20%)的阻燃剂,研究其对LiNi_(0.4)Co_(0.2)Mn_(0.4)O_2三元材料作为正极材料组装的5 Ah锂离子软包电池的倍率性能、过充性能和短路性能的影响.实验结果表明,电解液中5%体积含量的阻燃剂使软包电池在1C和2C放电时,具有最好的倍率性能;当阻燃剂的体积含量提升到20%,在过充时,电池表面温度升高最少;在短路实验时,电池不起火、不爆炸.The 5 Ah soft packed lithium ion batteries with LiNi0.4Co0.2Mn0.4O2 as the positive electrode material and the organic electrolytes with different amounts of fire retardants as the electrolyte solution were prepared.The effects of the fire retardant amount（5 %,10 %,20 %） of the fire retardants on the rate performances,short-circuit characteristics and overcharged behaviors of the 5 Ah soft packed lithium ion battery were investigated by electrochemical methods.The results indicated that the best rate performances were obtained by adding 5 vol.% of the fire retardants in the electrolyte solution when the battery was discharged at 1C and 2C.The battery had the lowest surface temperature with 20 vol.% of fire retardant in the electrolyte solution when it was over-charged.The batteries could not catch fire and explode when the battery were short-circuited.

关 键 词：锂离子软包电池 阻燃剂 安全性能 倍率性能 过充 

分 类 号：TM912[电气工程—电力电子与电力传动]