Multifunctional phase change composite material with good flexibility, efficient heat management and efficient energy storage performance and preparation method and application thereof

By encapsulating paraffin on bioporous carbon, the problem of leakage and low thermal conductivity of solid-liquid organic phase change materials during phase change is solved, efficient electrothermal conversion and photothermal conversion are achieved, thermal stability and conductivity are enhanced, and flexibility is provided, which is suitable for thermal management of lithium-ion batteries.

CN119639427AActive Publication Date: 2025-03-18LIAONING UNIVERSITY
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Patent Information

Application Number
CN202411806285.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-18
Estimated Expiration
2044-12-10

AI Technical Summary

Technical Problem

Existing solid-liquid organic phase change materials are prone to leakage during phase change and have low thermal conductivity, which limits their practical application in solar thermal storage and release.

Method used

Bioporous carbon obtained by silver plating and carbonization of biocarbon fibers is used as the conductive and thermal network, and paraffin is encapsulated on it to prepare a multifunctional phase change composite material with good flexibility, efficient thermal management and efficient energy storage performance.

Benefits of technology

It realizes efficient electrothermal conversion and photothermal conversion of phase change materials, enhances its thermal stability and conductivity, avoids leakage problems, and provides flexibility, which is suitable for thermal management of lithium-ion batteries.

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Abstract

The invention belongs to the technical field of organic materials, and particularly relates to a multifunctional phase change composite material with good flexibility, efficient heat management and efficient energy storage performance and a preparation method and application thereof. The phase change composite material disclosed by the invention is a multifunctional phase change material which is good in conductivity, leakproof and flexible and is obtained by taking cotton as a substrate and carrying out auto-polymerization and in-situ chemical silver plating of polydopamine (PDA) on the basis of the cotton, and then carbonizing and packaging paraffin. The raw materials are easy to obtain, the price is low, the experiment is simple and convenient, and the obtained phase change material has the properties of heat energy storage and conversion, heat stability, high conductivity, leakage prevention, flexibility, photo-thermal conversion and the like. The cheap and easily available phase change material provides a way for energy storage and conversion materials, and also provides solution suggestions for effective thermal management of lithium ions.
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