Organic Ionic Plastic Crystal-Based Composite Electrolyte with Surface Enhanced Ion Transport and Its Use in All-Solid-State Lithium Batteries

被引：51

作者：

Wang, Xiaoen ^{[1
]}

Zhu, Haijin ^{[1
]}

Greene, George W. ^{[1
]}

Zhou, Yundong ^{[1
]}

Yoshizawa-Fujita, Masahiro ^{[2
]}

Miyachi, Yukari ^{[2
]}

Armand, Michel ^{[3
]}

Forsyth, Maria ^{[1
]}

Pringle, Jennifer M. ^{[1
]}

Howlett, Patrick C. ^{[1
]}

机构：

[1] Deakin Univ, IFM, Waurn Ponds Campus, Geelong, Vic 3216, Australia

[2] Sophia Univ, Dept Mat & Life Sci, Chiyoda Ku, 7-1 Kioi Cho, Tokyo 1028554, Japan

[3] CIC Energigune, Alava Technol Pk, C Albert Einstein 48,4801510 MINANO, Alava, Spain

来源：

ADVANCED MATERIALS TECHNOLOGIES | 2017年 / 2卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

composite electrolytes; lithium metal batteries; organic ionic plastic crystals; solid state NMR; NANOCOMPOSITE POLYMER ELECTROLYTES; TEMPERATURE; CONDUCTIVITY; MEMBRANES; LIQUID;

D O I：

10.1002/admt.201700046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solid-state electrolytes have been identified as one of the most attractive materials for the fabrication of reliable and safe lithium batteries. This work demonstrates a facile strategy to prepare highly conductive organic ionic plastic crystal (OIPC) composites by combination of a low weight fraction of Li+ doped OIPC (N-ethyl-N-methylpyrrolidinium bis(fluorosulfonyl)amide, [C(2)mpyr][FSI]) with commercial poly(vinylidene difluoride) (PVDF) powder. Benefiting from the enhancement of lithium ion dynamics, as evidenced by the solid-state NMR measurements, the composite electrolyte shows an order of magnitude higher conductivity than that of the bulk material. Lithium metal/LiFePO4 cells incorporating the prepared composite electrolytes show impressively high specific capacity and good cycling stability (99.8% coulombic efficiency after 1200 cycles at 2 C, room temperature), which is the first demonstration of long-term cycling performance at such high rate for an OIPC-based electrolyte. The high voltage cathode, LiCo1/3Ni1/3Mn1/3O2 was tested and good rate performance and stable capacities have been achieved.

引用

页数：6

共 33 条

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