Controlling the Supramolecular Architecture Enables High Lithium Cationic Conductivity and High Electrochemical Stability for Solid Polymer Electrolytes

K Xie; Q Fu; F Chen; H Zhu; X Wang; G Huang; H Zhan; Q Liang; CM Doherty; D Wang; GG Qiao; D Li

Journal article

Controlling the Supramolecular Architecture Enables High Lithium Cationic Conductivity and High Electrochemical Stability for Solid Polymer Electrolytes

K Xie, Q Fu, F Chen, H Zhu, X Wang, G Huang, H Zhan, Q Liang, CM Doherty, D Wang, GG Qiao, D Li

Advanced Functional Materials | WILEY-V C H VERLAG GMBH | Published : 2024

DOI: 10.1002/adfm.202315495

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Abstract

Solid polymer electrolytes (SPEs) are long sought after for versatile applications due to their low cost, light weight, flexibility, ease of scale-up, and low interfacial impedance. However, obtaining SPEs with high Li+ conductivity (σ+) and high voltage stability to avoid concentrated polarization and premature capacity loss has proven challenging. Here a stretchable dry-SPE is reported with a semi-interpenetrating, supermolecular architecture consisting of a cross-linked polyethylene oxide (PEO) tetra-network and an alternating copolymer poly(ethylene oxide-alt-butylene terephthalate). Such a unique supermolecular architecture suppresses the formation of Li+/PEO intermolecular complex and ..

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University of Melbourne Researchers

Greg Qiao Author

Dan Li Author

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Awarded by Australian Government

Funding Acknowledgements

Q.F. acknowledges the Australian Research Council (ARC) under the Future Fellowship (FT180100312). F.C. acknowledges the Australian Research Council for funding via the Australian Centre for Electro materials Science (CE140100012) and computational resources provided at the NCI National Facility systems at the Australian National University through the National Computational Merit Allocation Scheme supported by the Australian Government. Q. Liang acknowledges the financial support from the ARC (DE190100445). D.L. was grateful for the financial support from the ARC (FL180100029) and the University of Melbourne.