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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
Partially etched Ti3C2Tx MXene with residual aluminium boosts ionic conduction in PVDF-based composite solid polymer
Shuai Chen1, Di Wu1, Jia Guo1
1College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu, 241002, China. bygeng@mail.ahnu.edu.cn.
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Partially etched Ti3C2Tx MXene with residual Al (TTAC) boosts PVDF-based solid electrolytes. Residual Al2O3 and vacancies promote LiTFSI dissociation; -F/-O groups lower desolvation barriers; reduced crystallinity enhances Li+ transport. The electrolyte achieves 4.21 × 10-3 S cm-1, tLi+ = 0.82, 2500 h dendrite-free Li‖Li cycling, and 94.2% retention after 800 cycles at 0.5C in Li‖LFP cells.
