{"title":"具有模块化组装和各向异性的柔性磁吸相变材料用于电池热管理应用","authors":"Donghao Fan , Qianyu Chen , Ziliang Rui , Shuai Yin , Hao Peng , Binjian Nie , Xiaotian Peng , Zhen Shangguan","doi":"10.1016/j.est.2025.118787","DOIUrl":null,"url":null,"abstract":"<div><div>Flexible encapsulated phase change materials (FPCMs) have been extensively investigated, demonstrating substantial promise for passive thermal management applications. However, efficient thermal conduction networks remain difficult due to the low intrinsic conductivity of PCMs and limited filler network continuity. Herein, we present a scalable, magnetically assisted design in which paraffin wax (PW) is embedded within a dual three-dimensional (3D) network formed by silver-shelled neodymium iron boron (NdFeB#Ag) particles and a polydimethylsiloxane (PDMS)-based carbon nanotubes (CNTs) network. Upon application of an external magnetic field, under an external field, NdFeB particles self-assemble into a porous, chain-like 3D framework that remains stable after field removal, enabling modular, container-free assembly and anisotropic heat transport. This magnetically induced array overcomes the limitations associated with traditional rigid 3D skeletal templates, enabling seamless integration with diverse polymer matrices to simultaneously enhance flexibility, mechanical robustness, and thermal transport properties while ensuring leakage resistance. The resulting material achieves a thermal conductivity up to 2.97 W·m<sup>−1</sup>·K<sup>−1</sup> while maintaining latent heat more than 97 J·g<sup>−1</sup> and compressive yield strength of 13.19 MPa. In battery thermal management, modules keep surface temperatures below 50 °C during charge–discharge and reduce peak temperature by 21 °C at 10C. This work provides a versatile pathway for fabricating multifunctional FPCMs, offering significant potential for electronics cooling and energy systems.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"138 ","pages":"Article 118787"},"PeriodicalIF":8.9000,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Flexible magnetic suction phase change materials with modular assembly and anisotropy for battery thermal management applications\",\"authors\":\"Donghao Fan , Qianyu Chen , Ziliang Rui , Shuai Yin , Hao Peng , Binjian Nie , Xiaotian Peng , Zhen Shangguan\",\"doi\":\"10.1016/j.est.2025.118787\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Flexible encapsulated phase change materials (FPCMs) have been extensively investigated, demonstrating substantial promise for passive thermal management applications. However, efficient thermal conduction networks remain difficult due to the low intrinsic conductivity of PCMs and limited filler network continuity. Herein, we present a scalable, magnetically assisted design in which paraffin wax (PW) is embedded within a dual three-dimensional (3D) network formed by silver-shelled neodymium iron boron (NdFeB#Ag) particles and a polydimethylsiloxane (PDMS)-based carbon nanotubes (CNTs) network. Upon application of an external magnetic field, under an external field, NdFeB particles self-assemble into a porous, chain-like 3D framework that remains stable after field removal, enabling modular, container-free assembly and anisotropic heat transport. This magnetically induced array overcomes the limitations associated with traditional rigid 3D skeletal templates, enabling seamless integration with diverse polymer matrices to simultaneously enhance flexibility, mechanical robustness, and thermal transport properties while ensuring leakage resistance. The resulting material achieves a thermal conductivity up to 2.97 W·m<sup>−1</sup>·K<sup>−1</sup> while maintaining latent heat more than 97 J·g<sup>−1</sup> and compressive yield strength of 13.19 MPa. In battery thermal management, modules keep surface temperatures below 50 °C during charge–discharge and reduce peak temperature by 21 °C at 10C. This work provides a versatile pathway for fabricating multifunctional FPCMs, offering significant potential for electronics cooling and energy systems.</div></div>\",\"PeriodicalId\":15942,\"journal\":{\"name\":\"Journal of energy storage\",\"volume\":\"138 \",\"pages\":\"Article 118787\"},\"PeriodicalIF\":8.9000,\"publicationDate\":\"2025-10-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of energy storage\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352152X25035005\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of energy storage","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352152X25035005","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Flexible magnetic suction phase change materials with modular assembly and anisotropy for battery thermal management applications
Flexible encapsulated phase change materials (FPCMs) have been extensively investigated, demonstrating substantial promise for passive thermal management applications. However, efficient thermal conduction networks remain difficult due to the low intrinsic conductivity of PCMs and limited filler network continuity. Herein, we present a scalable, magnetically assisted design in which paraffin wax (PW) is embedded within a dual three-dimensional (3D) network formed by silver-shelled neodymium iron boron (NdFeB#Ag) particles and a polydimethylsiloxane (PDMS)-based carbon nanotubes (CNTs) network. Upon application of an external magnetic field, under an external field, NdFeB particles self-assemble into a porous, chain-like 3D framework that remains stable after field removal, enabling modular, container-free assembly and anisotropic heat transport. This magnetically induced array overcomes the limitations associated with traditional rigid 3D skeletal templates, enabling seamless integration with diverse polymer matrices to simultaneously enhance flexibility, mechanical robustness, and thermal transport properties while ensuring leakage resistance. The resulting material achieves a thermal conductivity up to 2.97 W·m−1·K−1 while maintaining latent heat more than 97 J·g−1 and compressive yield strength of 13.19 MPa. In battery thermal management, modules keep surface temperatures below 50 °C during charge–discharge and reduce peak temperature by 21 °C at 10C. This work provides a versatile pathway for fabricating multifunctional FPCMs, offering significant potential for electronics cooling and energy systems.
期刊介绍:
Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.