高等学校化学学报2017，Vol.38Issue(10)：1857-1863,7.DOI:10.7503/cjcu20160920
新型锂离子电池电解液添加剂的合成与应用
Synthesis and Application of New Types of Electrolyte Additives for Lithium Ion Battery
摘要
Abstract
A series of organic molecules combined with benzene ring and cyclic carbonate as electrolyte additives, including terephthalicacidbis-( 2-oxo-[ 1, 3 ] dioxolan-4-ylmethyl ) ester ( TABE ) , benzene-1, 3, 5-tricarboxylic acid tris-( 2-oxo-[ 1, 3 ] dioxolan-4-ylmethyl ) ester ( BATE1 ) and benzene-1, 2, 4, 5-tetracarb-oxylic acid tetrakis-(2-oxo-[1,3]dioxolan-4-ylmethyl) ester(BATE2), was designed and synthesized. The effects of these additives on the electrochemical performance of lithium ion batteries were studied by rate capa-bility, constant current charge-discharge test, electrochemical impedance spectroscopy ( EIS ) and scanning electron microscopy ( SEM ) . The results showed that the amount of substituents on benzene ring greatly influenced the interface between electrolyte and graphite. Compared with the blank electrolyte, a dense and stable Solid electrolyte interface ( SEI ) film could be observed on the surface of the graphite electrode with BATE1 or BATE2 after 20 charge-discharge cycles, which could optimize the interface between the electrode and the electrolyte and led to the less increase of battery resistance. The test of the rate capability of the battery showed that the addition of BATE2 could improve the rate performance of the battery;meanwhile TABE could make the battery' s performance worse.关键词
电解液添加剂/环碳酸甘油酯衍生物/锂离子电池/固体电解质中间相膜Key words
Electrolyte additive/Derivatives of glycerol carbonate/Lithim ion battery/Solid electrolyte interface( SEI) film分类
化学化工引用本文复制引用
郭梦雅,宗成星,艾淑娟,付凤至,王琪,刘靖,孙冬兰,郭艳玲,郭也平..新型锂离子电池电解液添加剂的合成与应用[J].高等学校化学学报,2017,38(10):1857-1863,7.基金项目
国家自然科学基金(批准号:21373150)资助.Supported by the National Natural Science Foundation of China( No. 21373150) . （批准号:21373150）
