黏结剂对锂离子电池性能的影响  

Effect of binder on the performance of Li-ion battery

作　　者：王倩倩 张俊婷[1] 姜文博 王宥宏[1,2] WANG Qian-qian;ZHANG Jun-ting;JIANG Wen-bo;WANG You-hong(Applied Science College,Taiyuan University of Science and Technology,Taiyuan,Shanxi 030024,China;Shanxi Wortheimer New Material Technology Co.,Ltd.,Taiyuan,Shanxi 030108,China)

机构地区：[1]太原科技大学应用科学学院,山西太原030024 [2]山西沃特海默新材料科技股份有限公司,山西太原030108

出　　处：《电池》2021年第6期591-593,共3页Battery Bimonthly

摘　　要：采用3种水性负极黏结剂羧甲基纤维素钠(CMC)与丁苯胶(SBR)组合、海藻酸钠(SA)与SBR组合和亚仕兰黏合剂-A(MSi-A)与亚仕兰黏合剂-B(MSi-B)组合,分析3种水性黏结剂的优缺点及对Si/C负极材料电性能的影响。CMC与SBR组合提高锂离子电池充放电容量及首次库仑效率的效果较好,当CMC的质量分数为5.0%时,以210~230 mA的电流在2~3 V循环,充放电比容量分别为439.9 mAh/g和482.1 mAh/g,首次库仑效率为91.25%。Three kinds of water-based binder such as carboxymethyl cellulose sodium(CMC)and styrene butadiene rubber(SBR)combination,sodium alginate(SA)and SBR combination,Ashland specialty ingredients-A(MSi-A)and Ashland specialty ingredients-B(MSi-B)combination were used.The advantages,disadvantages and effects on the electrical performance of Si/C anode materials of three kinds of water-based binder were analyzed.The combination of CMC and SBR was better for improving the charge-discharge capacity and the initial Coulombic efficiency of Li-ion battery.When the mass fraction of CMC was 5.0%,the charge and discharge specific capacities were 439.9 mAh/g and 482.1 mAh/g respectively at the current of 210-230 mA cycled in 2-3 V,the initial Coulombic efficiency was 91.25%.

关 键 词：锂离子电池 黏结剂 水性黏结剂 电池性能 负极材料 

分 类 号：TM912.9[电气工程—电力电子与电力传动]