黏结剂丁苯橡胶乳液在动力锂离子电池中的应用  

Application of Adhesive Styrene Butadiene Rubber in Power Lithium-ion Battery

作　　者：崔梦杰 孙哲 Cui Mengjie;Sun Zhe(SVOLT Energy Technology Co.,Ltd.,Jiangsu,214101;College of Textile and Clothing Engineering of Soochow University,Jiangsu,215000)

机构地区：[1]蜂巢能源(无锡)科技有限公司,江苏214101 [2]苏州大学纺织与服装工程学院,江苏215000

出　　处：《当代化工研究》2023年第21期108-112,共5页Modern Chemical Research

摘　　要：对三种不同的黏结剂-丁苯橡胶乳液(SBR)的力学性能、微观结构、热性能以及结晶性能进行了研究,并以LiNi_(0.9)Co_(0.04)Mn_(0.06)O_(2)软包锂离子电池为平台,研究不同SBR及含量对负极剥离强度、满电膨胀率和循环性能的影响。实验结果证明,SBR链段中苯乙烯占比对SBR的力学性能、负极满电膨胀率以及循环保持率有重要影响。当苯乙烯含量为20%时,负极满电膨胀率为35.7%,常温循环110圈循环容量保持率为96.3%;SBR中苯乙烯含量的降低,提升了SBR链段运动能力,从而提高了传输Li^(+)的能力。In this study,the mechanical properties,microstructure,thermal properties and crystallization properties of three different bindersstyrene butadiene rubber(SBR)were researched.Using LiNi_(0.9)Co_(0.04)Mn_(0.06)O_(2)soft package Li-ion battery,the influence of different binders styrene butadiene rubber on anode peel strength,swelling and cycle life was investigated.The experimental results demonstrate that the proportion of styrene in the SBR segment has a significant impact on the mechanical properties,anode swelling,and cycle retention rate of cell.When the styrene content is 20%,the anode swelling rate is 35.7%,and the capacity retention rate of 110 cycles at room temperature is 96.3%;The decrease in styrene content in SBR enhance the mobility of SBR segments,thereby improving the ability to transport Li^(+).

关 键 词：黏结剂 锂离子电池 丁苯橡胶乳液(SBR) 负极满电膨胀率 

分 类 号：TM912.9[电气工程—电力电子与电力传动]