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In Situ Electrochemical Polymerization Enabling High‐Performance Quasi‐Solid‐State Batteries.

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Title: In Situ Electrochemical Polymerization Enabling High‐Performance Quasi‐Solid‐State Batteries.
Authors: Zhu, Jiacheng1,2 (AUTHOR), Ma, Bingyun3 (AUTHOR), Zhong, Cong4 (AUTHOR), Wang, Ziwei1,2 (AUTHOR), Tian, Chunxi1,2 (AUTHOR), Weng, Suting1 (AUTHOR), Li, Shuwei1 (AUTHOR), Cao, Mengyan1,2 (AUTHOR), Wang, Zhaoxiang1,2 (AUTHOR), Li, Yejing4 (AUTHOR) liyejing@ustb.edu.cn, Li, Hong1,2 (AUTHOR) hli@iphy.ac.cn, Cheng, Tao3 (AUTHOR) tcheng@suda.edu.cn, Wang, Xuefeng1,2 (AUTHOR) wxf@iphy.ac.cn
Source: Advanced Energy Materials. 2/18/2026, Vol. 16 Issue 7, p1-13. 13p.
Subject Terms: *Electropolymerization, *Polymerization, *Solid state batteries, *Fluoroethylene, *Storage batteries, *Electrolytes
Abstract: In situ polymerization of liquid electrolytes is promising for achieving solid batteries with enhanced safety and low interfacial resistance. However, most current in situ polymerization methods, such as in situ thermal polymerization (THPO), are impacted frequently by issues such as uncontrollability, uneven polymerization, and low Li+ conductivity. In this context, we propose an innovative in situ electrochemical polymerization (ELPO) technique that enables a controllable and uniform polymerization reaction on the cathode side by potentiostatically charging the battery to a high voltage (4.2 V). The degree of polymerization could be monitored via in situ scanning Raman spectroscopy. The reaction pathways are revealed via both experiments and theoretical calculations. It is interesting to find that, without adding any extra conventional initiators, the dehydrogenation reaction of fluoroethylene carbonate (FEC) molecules at high voltages could initiate the polymerization of 1,3‐dioxolane (DOL). The LiFePO4||Li cells utilizing ELPO demonstrate an extraordinary capacity retention of 88.86% after 740 cycles and largely enhance the safety compared to their regular counterparts. These findings provide a simple, practically feasible, and controllable in situ polymerization method to achieve high‐performance quasi‐solid‐state batteries (QSSBs) that are compatible with current battery production. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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DbLabel: Energy & Power Source
An: 191655373
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: In Situ Electrochemical Polymerization Enabling High‐Performance Quasi‐Solid‐State Batteries.
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  Data: <searchLink fieldCode="AR" term="%22Zhu%2C+Jiacheng%22">Zhu, Jiacheng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Bingyun%22">Ma, Bingyun</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhong%2C+Cong%22">Zhong, Cong</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Ziwei%22">Wang, Ziwei</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tian%2C+Chunxi%22">Tian, Chunxi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Weng%2C+Suting%22">Weng, Suting</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Shuwei%22">Li, Shuwei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Mengyan%22">Cao, Mengyan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Zhaoxiang%22">Wang, Zhaoxiang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Yejing%22">Li, Yejing</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> liyejing@ustb.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Hong%22">Li, Hong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> hli@iphy.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Cheng%2C+Tao%22">Cheng, Tao</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> tcheng@suda.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Xuefeng%22">Wang, Xuefeng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wxf@iphy.ac.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Advanced+Energy+Materials%22">Advanced Energy Materials</searchLink>. 2/18/2026, Vol. 16 Issue 7, p1-13. 13p.
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In situ polymerization of liquid electrolytes is promising for achieving solid batteries with enhanced safety and low interfacial resistance. However, most current in situ polymerization methods, such as in situ thermal polymerization (THPO), are impacted frequently by issues such as uncontrollability, uneven polymerization, and low Li+ conductivity. In this context, we propose an innovative in situ electrochemical polymerization (ELPO) technique that enables a controllable and uniform polymerization reaction on the cathode side by potentiostatically charging the battery to a high voltage (4.2 V). The degree of polymerization could be monitored via in situ scanning Raman spectroscopy. The reaction pathways are revealed via both experiments and theoretical calculations. It is interesting to find that, without adding any extra conventional initiators, the dehydrogenation reaction of fluoroethylene carbonate (FEC) molecules at high voltages could initiate the polymerization of 1,3‐dioxolane (DOL). The LiFePO4||Li cells utilizing ELPO demonstrate an extraordinary capacity retention of 88.86% after 740 cycles and largely enhance the safety compared to their regular counterparts. These findings provide a simple, practically feasible, and controllable in situ polymerization method to achieve high‐performance quasi‐solid‐state batteries (QSSBs) that are compatible with current battery production. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1002/aenm.202504413
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 13
        StartPage: 1
    Subjects:
      – SubjectFull: Electropolymerization
        Type: general
      – SubjectFull: Polymerization
        Type: general
      – SubjectFull: Solid state batteries
        Type: general
      – SubjectFull: Fluoroethylene
        Type: general
      – SubjectFull: Storage batteries
        Type: general
      – SubjectFull: Electrolytes
        Type: general
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      – TitleFull: In Situ Electrochemical Polymerization Enabling High‐Performance Quasi‐Solid‐State Batteries.
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            NameFull: Ma, Bingyun
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            – D: 18
              M: 02
              Text: 2/18/2026
              Type: published
              Y: 2026
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