A Cross-Linking Succinonitrile-Based Composite Polymer Electrolyte with Uniformly Dispersed Vinyl-Functionalized SiO2 Particles for Li-Ion Batteries

被引：82
作者：
Liu, Kai [1 ,2 ]
Ding, Fei [2 ]
Liu, Jiaquan [3 ]
Zhang, Qingqing [2 ]
Liu, Xingjiang [1 ,2 ]
Zhang, Jinli [1 ]
Xu, Qiang [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[2] Tianjin Inst Power Sources, Natl Key Lab Sci & Technol Power Sources, Tianjin 300384, Peoples R China
[3] George Washington Univ, Sch Engn & Appl Sci, Washington, DC 20052 USA
来源：
ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 36期
关键词：
solid-state electrolyte; lithium ion battery; succinonitrile; ultraviolet irradiation; cross-linking; RECHARGEABLE LITHIUM BATTERIES; PLASTIC CRYSTAL ELECTROLYTE; ELECTROCHEMICAL PROPERTIES; CYCLING PERFORMANCE; SEPARATOR; NANOPARTICLES; FILLERS; CONDUCTIVITY; TRANSPORT; MEMBRANES;
D O I：
10.1021/acsami.6b05882
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A cross-linking succinonitrile (SN)-based composite polymer electrolyte (referred to, as "CLPC CPE"), in which vinyl-functionalized SiO2 particles connect with trimethylolpropane propoxylate triacrylate (TPPTA) monomers by covalent bonds, was prepared by an ultraviolet irradiation (UV-curing) process successfully. Vinyl-functionalized SiO2 particles may react with TPPTA monomers to form a cross-linking network within the SN-based composite polymer electrolyte under ultraviolet irradiation. Vinyl-functionalized SiO2 particles as the fillers of polymer electrolyte may improve both the thermal stability of CLPC-CPE and interfacial compatibility between CLPC-CPE and electrodes effectively. There is no weight loss for CLPC-CPE until above 230 degrees C. The ionic conductivity of CLPC-CPE may reach 7.02 X 10(-4) S cm(-1) at 25 degrees C. CLPC-CPE has no significant oxidation current until up to 4.6 V (vs Li/Li+). The cell of LiFePO4/CLPC-CPE/Li has presented superior cycle performance and rate capability. The cell of LiFePO4/CLPC-CPE/Li may deliver a high discharge capacity of 154.4 mAh g(-1) at a rate of 0.1 C after 100 charge discharge cycles, which is similar than that of :the control cell Of LiFePO4/liquid electrolyte/Li. Furthermore, the cell of LiFePO4/CLPC-CPE/Li can display a high discharge capacity of 112.7 mAh g(-1) at a rate of 2 C, which is higher than that of the cells assembled with other plastic crystal polymer electrolyte reported before obviously.
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页码：23668 / 23675
页数：8
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