Composition and Structure Design of Poly(vinylidene fluoride)-Based Solid Polymer Electrolytes for Lithium Batteries |
| |
| Authors: | Shengyu Zhou Shijie Zhong Yunfa Dong Zhezhi Liu Liwei Dong Botao Yuan Haodong Xie Yuanpeng Liu Liang Qiao Jiecai Han Weidong He |
| |
| Affiliation: | 1. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composite, Materials and Structures, Harbin Institute of Technology, Harbin, 150080 China Chongqing Research Institute, Harbin Institute of Technology, Chongqing, 401151 China;2. School of Petroleum Engineering, Chongqing University of Science and Technology, Chongqing, 401331 China;3. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001 China;4. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composite, Materials and Structures, Harbin Institute of Technology, Harbin, 150080 China;5. School of Physics, University of Electronic Science and Technology of China, Chengdu, 611731 China |
| |
| Abstract: | Solid-state lithium batteries have become the focus of the next-generation high-safety lithium batteries due to their dimensional, thermal, and electrochemical stability. Thus, the progress of solid electrolytes with satisfactory comprehensive performances has become the key to promoting the development of solid batteries. Herein, poly(vinylidene fluoride) (PVDF) solid polymer electrolytes (SPEs) possess excellent flexibility, mechanical property, and high electrochemical and thermal stability, which show huge application potentiality in solid-state lithium batteries and obtain extensive research. But the PVDF SPEs have been suffering from low ionic conductivity, high crystallinity, and low reactive sites. The development of PVDF-based composite solid polymer electrolytes (CSPEs) has been confirmed to be a forceful strategy to optimize the performance of electrolytes. In this review, based on different design strategies, the recent progress of PVDF-based SPEs is introduced in detail, especially in the mechanism of ionic conductivity enhancement and interface regulation by modified fillers. Besides, the applications of PVDF-based SPEs in Li-S and Li-O2 battery systems are also introduced. Finally, this review presents some insights for promoting the development of high-performance PVDF-based SPEs. |
| |
| Keywords: | lithium-ion batteries modification strategies PVDF solid polymer electrolytes |
|
|
