Organosilicon functionalized glycerol carbonates as electrolytes for lithium-ion batteries

被引：24

作者：

Wang, Jinglun ^{[1
]}

Yong, Tianqiao ^{[1
,2
]}

Yang, Jianwen ^{[3
]}

Ouyang, Chuying ^{[4
]}

Zhang, Lingzhi ^{[1
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

[3] Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Guangxi, Peoples R China

[4] Jiangxi Normal Univ, Dept Phys, Nanchang 330022, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 23期

基金：

中国国家自然科学基金;

关键词：

VINYL ETHYLENE CARBONATE; CELLS; ADDITIVES; SOLVENTS; SURFACE; LIQUID; PERFORMANCE; ELECTRODES; STABILITY; SILANE;

D O I：

10.1039/c4ra15854g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two triethoxyl-/trimethoxyl-silyl functionalized glycerol carbonates and one disiloxanyl functionalized glycerol carbonate were synthesized through a cycloaddition reaction of carbon dioxide with allyl glycidyl ether followed by a hydrosilylation with the corresponding hydrosilanes. Their chemical structures were fully characterized by H-1 and C-13 nuclear magnetic resonance (NMR) spectroscopy and their basic physicochemical properties including dielectric constant, viscosity, ionic conductivity, apparent lithium transference number and electrochemical window, were systematically measured. Trimethoxysilyl functionalized glycerol carbonate as electrolyte solvent with LiPF6 (0.6 M) and lithium oxalyldifluoroborate (0.4 M) binary salts exhibited good cycling stability over 2.7-4.4 V in high-voltage-LiCoO2/graphite full cells. Disiloxane functionalized glycerol carbonate acted as an efficient electrolyte additive to improve the wetting property on the separator in Li/LiCoO2 cells.

引用

页码：17660 / 17666

页数：7

共 45 条

[1] Thermal Stability and Electrochemical Properties of Fluorine Compounds as Nonflammable Solvents for Lithium-Ion Batteries [J].