<italic style="font-style: italic">In situ</italic> Construction of Fluorinated Polyester-based Block Copolymer Electrolytes <italic style="font-style: italic">via</italic> Orthogonal Polymerization

Kai-Rui Guo; Mu-Yao Lv; Zhi-Gang Xue

doi:10.1007/s10118-025-3542-0

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In situ Construction of Fluorinated Polyester-based Block Copolymer Electrolytes via Orthogonal Polymerization

RESEARCH ARTICLE | Updated：2026-02-13

- In situ Construction of Fluorinated Polyester-based Block Copolymer Electrolytes via Orthogonal Polymerization
- Chinese Journal of Polymer Science Vol. 44, Issue 3, Pages: 623-631(2026)
- Affiliations：
  
  Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Author bio：
  
  zgxue@mail.hust.edu.cn
- Funds：
- DOI：10.1007/s10118-025-3542-0
  CLC：
- Received：27 November 2025，
  
  Accepted：16 December 2025，
  
  Online First：04 February 2026，
  
  Published：15 March 2026
- Accepted：
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Guo, K. R.; Lv, M. Y.; Xue, Z. G. In situ construction of fluorinated polyester-based block copolymer electrolytes via orthogonal polymerization. Chinese J. Polym. Sci. 2026, 44, 623–631

Kai-Rui Guo, Mu-Yao Lv, Zhi-Gang Xue. In situ Construction of Fluorinated Polyester-based Block Copolymer Electrolytes via Orthogonal Polymerization[J]. Chinese Journal of Polymer Science, 2026, 44(3): 623-631.
Guo, K. R.; Lv, M. Y.; Xue, Z. G. In situ construction of fluorinated polyester-based block copolymer electrolytes via orthogonal polymerization. Chinese J. Polym. Sci. 2026, 44, 623–631 DOI： 10.1007/s10118-025-3542-0.

Kai-Rui Guo, Mu-Yao Lv, Zhi-Gang Xue. In situ Construction of Fluorinated Polyester-based Block Copolymer Electrolytes via Orthogonal Polymerization[J]. Chinese Journal of Polymer Science, 2026, 44(3): 623-631. DOI： 10.1007/s10118-025-3542-0.

摘要

This work develops a fluorinated block copolymer electrolyte that disrupts poly(

-caprolactone) (PCL) crystallinity to enhance ion transport and

in situ

forms a LiF-rich solid electrolyte interphase (SEI) for stable lithium metal cycling.

Abstract

The practical deployment of polyester-based solid electrolytes such as poly(

-caprolactone) (PCL) is hindered by two inherent material-level constraints: the semicrystalline nature of PCL chains severely restricts segmental mobility and limits ionic conductivity

whereas interfacial instability against lithium metal anodes jeopardizes long-term cycling. Based on orthogonal polymerization technology combined with electrolyte structural design concepts

this work achieved a one-step fabrication of a polyester-based block copolymer electrolyte (BCPE) system comprising fluorinated segments (PTFEA) and poly(

-caprolactone) (PCL). Structurally

this design enables a dual breakthrough in electrochemical performance: on one hand

the introduction of fluorinated segments with steric hindrance effects can effectively disrupt the regular arrangement of the PCL main chain

reduce the crystallinity of PCL within the polymer electrolyte

and significantly enhance the segmental mobility of the polymer matrix; on the other hand

during the charge/discharge cycles of lithium batteries

fluorinated segments can induce the formation of a LiF-rich solid electrolyte interphase (SEI) through

in situ

decomposition reactions

achieving interface stabilization and homogeneous lithium-ion deposition regulation.

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In situ Construction of Fluorinated Polyester-based Block Copolymer Electrolytes via Orthogonal Polymerization

DOI：10.1007/s10118-025-3542-0

摘要

Abstract

关键词

Keywords

references