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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
A ternary composite nanofiber-derived thin membrane electrolyte for solid-state Li metal batteries
Xiaoqi Gong1, Yaozheng Pan1, Linfeng Zhong1
1Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Key Laboratory of High-Performance Polymer-based Composites of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China. liuc63@mail2.sysu.edu.cn.
Abstract:
We develop novel membrane electrolytes comprising h-BN-doped poly(ethylene oxide) modified poly(vinylidene fluoride-co-hexafluoropropylene)-nanofibers (h-BN@PEO/PVH) with high ionic conductivity (3.3 × 10-4 S cm-1) and Li+ transference number (0.74), endowing solid LiFePO4//Li batteries with excellent cyclability over 1000 cycles at 60 °C. Our strategy surmounts the ionic conduction-interface stability trade-off and thin dimension-flexibility conflict.

