文献类型：期刊文献

中文题名：功能化水性粘合剂的制备及其性能

英文题名：Synthesis and electrochemical performance of water-based multifunction binder

作者：靳彤彤 宋丽 韩阳 邹习飞 马先果

第一作者：靳彤彤

机构：[1]贵州理工学院化学工程学院

第一机构：贵州理工学院化学工程学院

年份：2019

卷号：43

期号：9

起止页码：1441-1444

中文期刊名：电源技术

外文期刊名：Chinese Journal of Power Sources

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；

基金：国家自然科学基金(51603049);贵州省教育厅普通本科高校自然科学研究项目(黔教合KY字[2017]009);国家级大学生创新创业训练计划项目(201714440105)

语种：中文

中文关键词：多功能水性粘合剂;离子传输功能;三维粘接;锂离子电池正极

外文关键词：multi-function water-based binder;ion transport function;three-dimensional bonding;cathode of lithium ion battery

摘要：从分子结构设计出发构筑水性粘合剂,以水溶性高分子为分散剂,软单体和硬单体分别为核层和壳层,采用乳液聚合方法制备具有三维结构的水性粘合剂乳液,赋予粘合剂离子传输功能。用该粘接剂制备锂离子电池正极片。通过透射电镜(TEM)、扫描电镜(SEM)、红外光谱(FTIR)等手段对电极表面及结构进行表征,对电极进行循环伏安测试、充放电测试,考察水性粘合剂对极片涂覆粘接力和电化学性能的影响。结果表明水性粘合剂能够实现粉体三维粘结,用其制备的LiFePO4电极0.2C首次放电比容量为145mAh/g,1.0C放电比容量为134.3mAh/g,100次循环时比容量为133mAh/g。
Based on the molecular structure design, the water-based binder was prepared. The water-soluble polymer was used as dispersant, the soft monomer and the hard monomer were the core layer and the shell layer respectively. The water-based binder emulsion with three-dimensional structure was prepared by emulsion polymerization, giving the binder ion transport function. The cathode plates of lithium ion batteries were prepared with this binder. The surface of the electrode and the structure were characterized by transmission electron microscopy (TEM), scanning electron microscope (SEM), fourier transform infrared (FTIR). The cyclic voltammetry (CV) and charge-discharge test were conducted to investigate the mechanical adhesive strength and the electrochemical performances of the water-based binder. The results showed that the prepared water-based binder could bond the active materials in three dimensions. The LiFePO4 as cathode active material had an initial discharge capacity of 145 mAh/g and 134.3 mAh/g at 0.2 C rate and 1.0 C rate, respectively. The corresponding discharge capacity was 133 mAh/g after 100 cycles at 1.0 C rate.