Dynamic Migration‐Pulling Polymer Electrolyte Design Strategy for Low‐Temperature Lithium–Sulfur Batteries
Abstract
Abstract Quasi‐solid‐state lithium–sulfur batteries exhibit significant promise as safe, high‐energy electrochemical storage technology, yet their performance remains constrained by polysulfide accumulation and exacerbated shuttle effects due to sluggish redox kinetics and inefficient charge transport. Here, a dynamic migration‐pulling strategy is proposed to accelerate polysulfide redox kinetics by dynamically restructuring the solvated structure of Li + , which is validated on a GPE incorporating boronic ester dynamic covalent bonds and polar side chains (BE‐GPE). Theoretical calculations and experiments revealed that the desolvation barrier for Li + is significantly reduced, while the ligand groups were pulled out from the solvated shell assisted by the migration of dynamic covalent bonds. Rapid charge transfer kinetics are attainable via designed electrolyte. Consequently, BE‐GPE based lithium–sulfur batteries delivered high reversible capacity of 1446 mAh g −1 at 0.1 C and long‐term cycling stability with an average capacity decay of 0.04% during 1000 cycles at 0.5 C. The initial capacity at 0.5 C is up to 920 mAh g −1 and remains stable for 200 cycles at 0 °C. Successfully realized the energy storage of quasi‐solid‐state Li–S batteries under low‐temperature conditions.
Article Details
Authors (13)
Wenkai Song
Borui Li
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Yunpeng Qu
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Wanyuan Jiang
State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Mengfan Pei
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Naiwen Hu
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Shuo Zhuo
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Chang Su
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Xin Jin
Runyue Mao
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Dongming Liu
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Xigao Jian
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)
Fangyuan Hu
School of Materials Science and Engineering, State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Technology Innovation Center of High Performance Resin Materials (Liaoning Province)