Upcycling waste poly(ethylene terephthalate) into polymer electrolytes,Journal of Materials Chemistry A

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Upcycling waste poly(ethylene terephthalate) into polymer electrolytes
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-11-15 , DOI: 10.1039/d2ta06692k
Ming Yan Tan ₁ , Leonard Goh ₁ , Dorsasadat Safanama ₁ , Wei Wei Loh ₁ , Ning Ding ₁ , Sheau Wei Chien ₁ , Shermin S. Goh ₁ , Warintorn Thitsartarn ₁ , Jason Y. C. Lim _{1,

2} , Derrick W. H. Fam _{1,

3,

4}

Affiliation

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.

中文翻译：

将废聚对苯二甲酸乙二醇酯升级为聚合物电解质

在我们日益电气化的现代世界中，锂离子电池 (LiB) 在储能方面发挥着重要作用，聚合物电解质 (PE) 材料有望通过消除与当今使用的液体电解质相关的最关键安全隐患来彻底改变电池设计。尽管人们越来越关注可持续 PE 设计，但令人惊讶的是，使用大量废弃商品塑料作为 PE 生产的替代原料仍然被忽视了。在此，我们报告了通过废聚对苯二甲酸乙二醇酯 (PET) 瓶的化学升级回收获得的 PE 的第一个例子，利用 PET 的酯键对化学溶剂分解的敏感性和对苯二甲酸酯芳香族成分的结构刚性，以实现独立式导电膜的形成。我们的 PET 衍生聚氨酯 PE 在用作固体和凝胶聚合物电解质时显示出良好的离子导电性，并且可以组装成工作锂离子电池。这为利用废塑料设计未来的可持续 PE 材料并为循环材料经济做出贡献开创了先例。

更新日期：2022-11-15

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