Researchers have successfully upcycled waste PET plastic into polymer electrolytes, which are key components for safer lithium-ion batteries.
, published in the, is the first known report of a working lithium-ion battery assembled using polymers upcycled from PET plastics, regularly used to make plastic bottles.According to the scientists, plastic waste is conventionally recycled through mechanical and chemical processes, which have their drawbacks. For mechanical recycling, only a small proportion of recycled PET can eventually be used, as their physical properties degrade with each round of recycling due to polymer chain cleavage.
In addition, they possess easily breakable chemical bonds which allow these polymers to be repurposed into new chemical building blocks with ease. These can then be reconstituted into new polymers for fresh applications. After assessing the viability of the PET-derived polymers as solid polymer electrolytes, the team further evaluated their ionic conductivity and cycling performance when used as gel polymer electrolytes for LiBs.
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