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Synthesis of New Lithium-Conducting Copolymers and the Influence of Their Structure and Composition on Ionic Conductivity

Abstract

A new polymeric electrolyte with mobile charges of one type has been synthesized. It is a block copolymer with non-ionic block of poly(2,2,3,3,4,4,5,5-octafluoropentyl methacrylate), which improves mechanical performance, and ionic block as a random copolymer of lithium 1-[3-(methacryloxy)-propylsulfonyl]-1-(trifluoromethanesulfonyl)imide with poly(ethylene glycol) methacrylate. A possibility has been shown for the tuning of ionic conductivity in a wide range (from 1 × 10–10 to 1 × 10–7 S cm–1, 25°C) by varying the ratio of macromolecular weights of neutral and ionic blocks and concentration of lithium monomer units in the ionic block.

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Funding

This work was financially supported by the Russian Science Foundation (project no. 21-13-00173). The study of polymer properties was performed using equipment of the Center for Molecular Structure Studies, Nesmeyanov Institute of Organoelement Compounds, RAS, with the support of the Ministry of Education and Science of the Russian Federation.

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Correspondence to D. O. Ponkratov.

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The authors declare no conflicts of interest.

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Translated by I. Kudryavtsev

The work is presented in the virtual issue “Young Scientists of the Russian Academy of Sciences.”

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Ponkratov, D.O., Lozinskaya, E.I., Shaplov, A.S. et al. Synthesis of New Lithium-Conducting Copolymers and the Influence of Their Structure and Composition on Ionic Conductivity. Dokl Chem 502, 29–36 (2022). https://doi.org/10.1134/S0012500822020021

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  • DOI: https://doi.org/10.1134/S0012500822020021

Keywords:

  • Li-conducting block copolymer
  • polymeric electrolyte
  • lithium battery
  • RAFT-polymerization