Study on ionic conductivity of polymer electrolyte plasticized with PEG–aluminate ester for rechargeable lithium ion battery |
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| Institution: | 1. Nanofluids Research Laboratory, Department of Mechanical and Aeronautical Engineering University of Pretoria, Private Box 0002, Pretoria, South Africa;2. Department of Industrial and Information Engineering, Università degli Studi della Campania “Luigi Vanvitelli”, via Roma 29, 81031 Aversa, Italy;1. Nanoyang Group, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300350, China.;2. School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia.;3. Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China;1. School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, PR China;2. Key Labortory of Environment-friendly Polymer Materials of Anhui Province, Engineering Technology Research Center of Water-Borne Polymer Materials of Anhui Province, Hefei 230601, PR China |
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| Abstract: | We have synthesized poly(ethylene glycol) (PEG)-aluminate ester as a plasticizer for solid polymer electrolytes. The thermal stability, ionic conductivity and electrochemical stability of the polymer electrolyte which consist of poly(ethylene oxide) (PEO)-based copolymer, PEG–aluminate ester and lithium bis-trifluoromethanesulfonimide (LiTFSI) were investigated. Addition of PEG–aluminate ester increased the ionic conductivity of the polymer electrolyte, showing greater than 10? 4 S cm? 1 at 30 °C. The polymer electrolyte containing PEG–aluminate ester retained thermal stability of the non-additive polymer electrolyte and exhibited electrochemical stability up to 4.5 V vs. Li+/Li at 30 °C. |
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