Superionic conduction in solid polymer electrolytes – decoupling ion transport from segmental relaxation

Yang, Mengying; Epps, Thomas H.

doi:10.1039/D5PY01070E

Superionic conduction in solid polymer electrolytes – decoupling ion transport from segmental relaxation

Journal Article · Tue Feb 17 00:00:00 EST 2026 · Polymer Chemistry

DOI:https://doi.org/10.1039/D5PY01070E· OSTI ID:3025520

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Univ. of Delaware, Newark, DE (United States)

Solvent-free, solid polymer electrolytes (SPEs) are promising candidates for next-generation, electrochemical energy storage systems due to their potential to enhance safety and performance, enable flexible device architectures, and streamline manufacturing processes. Conventional SPEs suffer from limited ionic conductivity due to the strong coupling between ion transport and (generally slow) polymer segmental relaxation. The realization of superionic conduction in SPEs, in which ions move faster than the structural relaxation of the polymers, requires a shift in design principles to promote this type of decoupled ion motion. In this perspective, we discuss how polymer architecture, ion–ion correlations, and ion–polymer interactions can unlock superionic behavior. We highlight several key design features, such as crystallinity, bulky side groups, high molecular weight, and percolating ionic aggregation, with a focus on creating low-barrier transport pathways in various polymer systems. We also demonstrate opportunities to combine polymer chemistry and data science through high-throughput and automated screening approaches to reveal how phase behavior, ion dynamics, and ionic interactions govern transport, thereby potentially enabling data-driven discovery of superionic polymer electrolyte materials.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Delaware, Newark, DE (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0014458

OSTI ID:: 3025520

Journal Information:: Polymer Chemistry, Journal Name: Polymer Chemistry Journal Issue: 10 Vol. 17; ISSN 1759-9962; ISSN 1759-9954

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Perspective: Morphology and ion transport in ion-containing polymers from multiscale modeling and simulations Zhu, Zhenghao; Paddison, Stephen J. Frontiers in Chemistry, Vol. 10 https://doi.org/10.3389/fchem.2022.981508	journal	August 2022

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