In situ polymerized succinonitrile-based solid polymer electrolytes for lithium ion batteries

Kai Liu, Qingqing Zhang, Bishnu P. Thapaliya, Xiao Guang Sun, Fei Ding, Xingjiang Liu, Jinli Zhang, Sheng Dai

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37 Scopus citations

Abstract

Novel solid polymer electrolytes based on succinonitrile (SN) plastic crystal electrolyte (SN-PCE) and polymerized ionic liquid (PIL) has been successfully synthesized via an in-situ method. The fabricated electrolyte (PIL-SN-PCE) is uniformly inlayed into the supporting matrix of polyimide, which effectively ameliorates the mechanical properties of the electrolyte. PIL can effectively enhance the thermal stability of electrolytes up to 300 °C and mitigate the parasitic reactions between the electrolytes and the electrodes. PIL-SN-PCE exhibits a remarkable oxidation ability up to 5.4 V vs Li/Li+ and a high room temperature ionic conductivity of 6.54 × 10−4 S cm−1. Furthermore, in-situ formed interface in PIL-SN-PCE guarantee an excellent compatibility with different electrodes, which can effectively improve the cycle stability and rate performances of both half-cells and full cells. Thus, PIL-SN-PCE is considered as a promising electrolyte for high energy density lithium-ion batteries.

Original languageEnglish
Article number115159
JournalSolid State Ionics
Volume345
DOIs
StatePublished - Feb 2020

Funding

This work was financially supported by the National Natural Science Foundation of China (No. 21476158 , 21621004 ), Program for Chang jiang Scholars and Innovative Research Team in University (No. IRT_15R46 ). XG.S and S.D. were supported by the U.S. Department of Energy , Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. F. D and XJ. L were supported by the Foundation of National Key Laboratory of Science and Technology on Power Sources (No. 9140C16020212-DZ2801 ), P. R. China. Appendix A This work was financially supported by the National Natural Science Foundation of China (No. 21476158, 21621004), Program for Chang jiang Scholars and Innovative Research Team in University (No. IRT_15R46). XG.S and S.D. were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. F. D and XJ. L were supported by the Foundation of National Key Laboratory of Science and Technology on Power Sources (No. 9140C16020212-DZ2801), P. R. China.

Keywords

  • In-situ method
  • Lithium-ion batteries
  • Polymerized ionic liquid
  • Succinonitrile

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