Issue 46, 2022

Upcycling waste poly(ethylene terephthalate) into polymer electrolytes

Abstract

Lithium-ion batteries (LiB) play an important role in energy storage in our increasingly-electrified modern world, with polymer electrolyte (PE) materials poised to revolutionise battery design by eliminating the most critical safety hazards associated with liquid electrolytes in use today. Although there is growing focus on sustainable PE designs, the use of abundant waste commodity plastics as an alternative feedstock for PE production remains surprisingly overlooked. Herein, we report the first examples of PEs obtained by chemical upcycling of waste poly(ethylene terephthalate) (PET) bottles, exploiting the susceptibility of PET's ester linkages for chemical solvolysis and the structural rigidity of the terephthalate aromatic components to allow for free-standing conductive film formation. Our PET-derived polyurethane PEs show promising ionic conductivity when used as both solid and gel polymer electrolytes, and can be assembled into a working lithium-ion battery. This sets a precedent for designing future sustainable PE materials from waste plastics and contributing towards a circular materials economy.

Graphical abstract: Upcycling waste poly(ethylene terephthalate) into polymer electrolytes

Supplementary files

Article information

Article type
Communication
Submitted
23 aug 2022
Accepted
13 nov 2022
First published
15 nov 2022
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2022,10, 24468-24474

Upcycling waste poly(ethylene terephthalate) into polymer electrolytes

M. Y. Tan, L. Goh, D. Safanama, W. W. Loh, N. Ding, S. W. Chien, S. S. Goh, W. Thitsartarn, J. Y. C. Lim and D. W. H. Fam, J. Mater. Chem. A, 2022, 10, 24468 DOI: 10.1039/D2TA06692K

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