Abstract
Polyethylene glycol (PEG) is a commonly used phase change material for thermal energy storage. It can store amounts of heat in the process of phase transition, whereas the solid-to-liquid transition requires it to be form-stabilized before application. In this study, a phase change composite with form-stability and processibility is prepared by simply blending PLA with PEG at 180 °C, reaching a maximum PEG loading of 90 wt%. The preparation is easy, cheap, environmental-benign, and scalable. Besides, the obtained PLA/PEG (PLEG) composites are feasible for regulating the thermal behaviors of batteries operated at high rates, providing a low-cost and simple approach to improving the cyclability of fast-charging batteries.
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