Synthetic flexible phase change energy storage material film

News from our newspaper (Reporter Bu Ye, Correspondent Sun Keyan) Recently, the team of Shi Quan, a researcher at the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, has made new progress in the research of phase change energy storage materials
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They synthesized a graphene-based composite phase change material film through a simple and easy strategy and used it for wearable photo-thermal management devices
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The composite phase change material film has excellent flexibility, heat storage and photothermal conversion capabilities, and provides a new idea for the research of smart wearable photo-thermal management devices
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Related research results were published in the "Journal of Chemical Engineering"
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Phase change energy storage materials can absorb and release a large amount of phase change latent heat at a relatively constant temperature, and are widely used in the field of thermal energy storage and temperature control thermal management
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However, the inherent liquid leakage, weak light-absorbing ability, and solid-state rigidity of traditional phase change materials make it extremely challenging in the research of wearable smart light-to-heat conversion devices
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In response to this problem, Shi Quan’s team synthesized a composite graphene film with excellent flexibility using polymer and graphene as raw materials, and composited it with a phase change material to obtain a flexible composite phase change material film
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The composite phase change material film has excellent shape stability, even at a state higher than the phase change temperature, it still remains solid without leakage; at the same time, the material has a high phase change material loading capacity and exhibits excellent heat storage The capacity remains stable even after 500 thermal cycles and bending cycles; in addition, the material also has excellent light-to-heat conversion ability, which can quickly convert solar energy into thermal energy storage, with a conversion efficiency of up to 96%
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The researchers further attached the composite phase change material film to the surface of the mannequin, and the results showed that it still showed stable light-to-heat conversion performance in the bent state
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The composite phase change material film exhibits the potential to be used in the field of human wearable light-heat management, and provides a new direction for the development of wearable smart fabrics
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