凝胶态聚合物锂离子电池的制备及性能  

Preparation and performance of gel polymer electrolyte for Li-ion battery

作　　者：邓耀明 宋晓娜 蔡卓弟 张新河 

机构地区：[1]东莞市迈科新能源有限公司,广东东莞523000 [2]东莞市化工学会,广东东莞523000

出　　处：《电池》2015年第4期221-224,共4页Battery Bimonthly

摘　　要：向1 mol/L LiPF6/EC＋EMC＋DEC（体积比3∶4∶3）电解液加入交联剂季戊四醇三丙烯酸酯（PETA）和引发剂过氧化苯甲酰（BPO）,通过加热引发聚合反应,制备锂离子电池用凝胶态聚合物电解液（GPE）。研究交联剂单体含量、反应温度和压力等对GPE性能的影响。在70℃反应温度和0.6 MPa压力的条件下,加入1%PETA可制备具有高倍率和良好循环性能的电池。在3.00~4.35 V循环,1.00 C常温放电容量为0.20 C时的93%,0.50 C循环280次的容量保持率为92%。Gel polymer electrolyte（GPE） for U-ion battery was prepared using pentaerythritol triacrylate （PETA）as cross-linking agent and benzoyl peroxide（BPO） as initiator in 1 mol/L LiPF~/EC ＋ EMC ＋ DEC （ 3： 4： 3, V% ） electrolyte by a thermal induced polymerization method. The influences of PETA amount, reaction temperature, gelation pressure and formation condition on the characteristics of GPE were studied. Better rate performance and cycle performance for battery were obtained when GPE was prepared at 1% PETA,70 ℃ and O. 6 MP~ The capacity ratio at 1.00 C was 93% compared to the battery at 0. 20 C,the capacity rentention was 92% at a charge-discharge current of O. 50 C in 3.00 -4. 35 V at room temperature after 280 cycles.

关 键 词：凝胶态聚合物电解质 季戊四醇三丙烯酸酯 聚合物锂离子电池 

分 类 号：O631.23[理学—高分子化学] TM912[理学—化学]