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A Newly Designed Composite Gel Polymer Electrolyte Based on Poly(Vinylidene Fluoride‐Hexafluoropropylene) (PVDF‐HFP) for Enhanced Solid‐State Lithium‐Sulfur Batteries
Author(s) -
Xia Yan,
Wang Xiuli,
Xia Xinhui,
Xu Ruochen,
Zhang Shengzhao,
Wu Jianbo,
Liang Yanfei,
Gu Changdong,
Tu Jiangping
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201703464
Subject(s) - hexafluoropropylene , electrolyte , materials science , chemical engineering , electrochemistry , polymer , composite number , quasi solid , lithium (medication) , battery (electricity) , nanoparticle , fluoride , polymer chemistry , inorganic chemistry , copolymer , nanotechnology , chemistry , composite material , electrode , medicine , power (physics) , physics , tetrafluoroethylene , quantum mechanics , dye sensitized solar cell , engineering , endocrinology
Developing high‐performance solid‐state electrolytes is crucial for the innovation of next‐generation lithium‐sulfur batteries. Herein, a facile method for preparation of a novel gel polymer electrolyte (GPE) based on poly(vinylidene fluoride‐hexafluoropropylene) (PVDF‐HFP) is reported. Furthermore, Li 1.5 Al 0.5 Ti 1.5 (PO 4 ) 3 (LATP) nanoparticles as the active fillers are uniformly embedded into the GPE to form the final PVDF‐HFP/LATP composite gel polymer electrolyte (CPE). Impressively, the obtained CPE demonstrates a high lithium ion transference number of 0.51 and improved electrochemical stability as compared to commercial liquid electrolyte. In addition, the assembled solid‐sate Li−S battery with the composite gel polymer electrolyte membrane presents a high initial capacity of 918 mAh g −1 at 0.05 C, and better cycle performance than the counterparts with liquid electrolyte. Our designed PVDF‐HFP/LATP composite can be a promising electrolyte for next‐generation solid‐state batteries with high cycling stability.