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A network-stabilized flexible composite phase change fabric for battery thermal management
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DOI：10.1016/j.ijthermalsci.2026.111236.png)
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Abstract
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With the development of thermal management needs and technologies, flexible inorganic composite phase change materials have attracted the attention of researchers in the fields of battery thermal management. In this paper, based on the melt mixing method, the composite flexible phase change material S(1) was obtained on spandex cloth (SF), and the cesium-tungsten bronze (CsxWO3) particle coating was used to composite with it, and the flexible and improved sodium acetate/sodium hydrogen phosphate dibasic composite phase change material — functional fabric (FCPCM) was obtained. The structure, physical and chemical composition, thermal properties, stability, and normal temperature properties of S(1-5), S(1)-SF and FCPCM were systematically studied. S(1) had the highest enthalpy of phase change of 109.9 J/g, and the temperature point of phase change was 33.3 °C. The thermal conductivity of S(1)-SF was 0.401 W/(m·K), which decreased to 0.298 W/(m·K) when the surface was covered with CsxWO3. Compared with untreated SF, FCPCM has significant thermal management capability and thermal cycling performance. The thermal management system of lithium battery based on FCPCM provides a way for the in-depth application of flexible composite phase change materials in the future.
Keywords:
Battery thermal management
Phase change materials
Functional fabrics
Hydrated salt eutectics
Hydrogel network
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