Designing double comb copolymer as highly lithium ionic conductive solid-state electrolyte membranes

Juyoung Moon, Sanghyuk Cho, Eunho Song, Kun Woo Park, Youngjin Chae, Jung Tae Park*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We present highly mechanical strength and ionic conductive solid-state electrolyte membranes based on amphiphilic double comb copolymer, i.e., poly(vinylidene chloride)-graft-poly(methyl methacrylate) (PVDC-g-PMMA) synthesized through atomic transfer radical polymerization (ATRP). Well-defined nanophase-separated amphiphilic double comb copolymers are complexed with two types of Li salts (LiTFSI and LiClO4) to form a solid-state electrolyte membrane. Compared to other types, the highest ionic conductivity of the solid-state electrolyte membranes is observed in an amphiphilic double comb copolymer with PVDC-g-PMMA/LiTFSI, due to the synergy of the dissociability of TFSI and the hopping transport of lithium ions facilitated by PMMA chains. Moreover, the lowest activation energy (0.15 eV) and excellent ionic conductivity (1.3 × 10−3 S cm−1) are also observed in the same solid-state electrolyte membranes at room temperature.

Original languageEnglish
Article number105093
Number of pages9
JournalReactive and Functional Polymers
Volume169
DOIs
Publication statusPublished - 2021

Bibliographical note

Funding Information:
This paper was supported by Konkuk University in 2019.

Publisher Copyright:
© 2021 Elsevier B.V.

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

Keywords

  • Atomic transfer radical polymerization (ATRP)
  • Double comb copolymer
  • Ionic conductivity
  • Lithium salt
  • Membrane
  • Solid-state electrolyte

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