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Cited by 169Ionic liquids properties and applicationsAdvanced Battery Materials and TechnologiesMaterial Dynamics and Properties

Effect of molecular weight on the ion transport mechanism in polymerized ionic liquids

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Fan, Fei, Wang, Weiyu, Holt, Adam P., Feng, Hongbo, Uhrig, David, Lu, Xinyi, Hong, Tao, Wang, Yangyang +3 more·2016·Macromolecules
DOI 10.1021/acs.macromol.6b00714
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Abstract

The unique properties of ionic liquids (ILs) have made them promising candidates for electrochemical applications. Polymerization of the corresponding ILs results in a new class of materials called polymerized ionic liquids (PolyILs). Though PolyILs offer the possibility to combine the high conductivity of ILs and the high mechanical strength of polymers, their conductivities are typically much lower than that of the corresponding small molecule ILs. In the present work, seven PolyILs were synthesized having degrees of polymerization ranging from 1 to 333, corresponding to molecular weights (MW) from 482 to 160 400 g/mol. Depolarized dynamic light scattering, broadband dielectric spectroscopy, rheology, and differential scanning calorimetry were employed to systematically study the influence of MW on the mechanism of ionic transport and segmental dynamics in these materials. The modified Walden plot analysis reveals that the ion conductivity transforms from being closely coupled with structural relaxation to being strongly decoupled from it as MW increases.

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  • Controlled radical polymerization (CRP) techniques represent the most versatile and facile approach for BCP synthesis, mainly due to their compatibility with a wide spectrum of monomers, high tolerance of functional groups and impurities, and ease of experimental setup.

    “Controlled radical polymerization (CRP) techniques represent the most versatile and facile approach for BCP synthesis, mainly due to their compatibility with a wide spectrum of monomers, high tolerance of functional groups and impurities, and ease of experimental setup [14,15,16].”

    From Block Copolymers: Synthesis, Self-Assembly, and Applications (2017) · cites this paper as [14]

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Authors
Fan, F., Wang, W., Holt, A. P., Feng, H., Uhrig, D., Lu, X., Hong, T., Wang, Y., Kang, N.-G., Mays, J., & Sokolov, A. P.
Affiliations
Oak Ridge National Laboratory (US)
Corresponding author
Fan, Fei
ORCID
Venue
Macromolecules
Publisher
American Chemical Society (ACS)
Published
2016-06-07
Volume
49
Issue
12
Pages
4557-4570
ISSN
  • 0024-9297 (ISSN-L)
  • 1520-5835
DOI
10.1021/acs.macromol.6b00714
OpenAlex
W2413762023
Semantic Scholar
d2f7001b9a5f679856ed95b614f2370e52a167c7
Cited by
169
References
92
Citations by year
2026: 15 · 2025: 17 · 2024: 18 · 2023: 14 · 2022: 8 · 2021: 23 · 2020: 16 · 2019: 19 · 2018: 19 · 2017: 19 · 2016: 1
FWCI
6.46
Type
journal article
Language
en
Open access
Locations
  • Macromolecules (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
NSF Polymer Program (DMR-1408811)
Topics
  • Physical Sciences › Chemical Engineering › Catalysis › Ionic liquids properties and applications
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Battery Materials and Technologies
  • Physical Sciences › Materials Science › Materials Chemistry › Material Dynamics and Properties
Keywords
poly(ionic liquids), molecular weight effects, ion transport mechanism, ionic conductivity, segmental motion, structural relaxation, Walden plot, degree of polymerization, electrolyte conductivity, polymer electrolytes

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