锂离子电池改性粘接剂的制备  

Preparation of Modified Bonding Agents for Lithium-ion Batteries

作　　者：常萌 喻亮 吴俊辰 蒋涛[1] 施德安[1] 张群朝[1] CHANG Meng;YU Liang;WU Jun-chen;JIANG Tao;SHI De-an;ZHANG Qun-chao(School of materials science and engineering,Hubei university,Wuhan 430062)

机构地区：[1]湖北大学材料科学与工程学院,武汉430062

出　　处：《胶体与聚合物》2023年第1期18-21,共4页Chinese Journal of Colloid & Polymer

基　　金：湖北省重大专项(2017AAA115)。

摘　　要：以异佛尔酮二异氰酸酯(IPDI)、2,2-二羟甲基丙酸(DMPA)、盐酸多巴胺(DOP)为单体,通过两步聚氨酯反应制备了三元聚合物(IDD)。以商用聚偏氟乙烯(PVDF)粘接剂为对照组,表征并分析了IDD和PVDF以1:1质量比共混制备的IP粘接剂用于锂离子电池硅碳复合阳极的性能。结果表明:IP阳极在0.3 C下进行20次充放电,其放电比容量较PVDF阳极容量高50 m Ah·g^(-1),且其在高电流密度下表现出较好的可逆容量。The ternary polymer(IDD)was prepared by a two-step polyurethane reaction using isophorone diisocyanate(IPDI),2,2-dihydroxymethylpropionic acid(DMPA)and dopamine hydrochloride(DOP)as monomers.The IP binder was prepared by blending IDD and PVDF in a 1:1 mass ratio,and its performance in silicon-carbon composite anodes for lithium-ion batteries was characterized and analyzed with a commercial polyvinylidene fluoride(PVDF)binder as a control group.The results showed that the specific discharge capacity of the IP anode was 50 mAh·g^(-1)higher than that of the PVDF anode after 20charge-discharge cycles at 0.3 C.And the IP anode exhibited a better reversible capacity at high current densities.

关 键 词：粘接剂 聚氨酯反应 锂离子电池 硅碳复合阳极 高可逆容量 

分 类 号：TU581.3[建筑科学—建筑技术科学]