Inter-Skeleton Conductive Routes Tuning Multifunctional Conductive Foam for Electromagnetic Interference Shielding,Sensing and Thermal Management

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外文摘要：Conductive polymer foam(CPF)with excellent compressibility and variable resistance has promising applications in electromagnetic interfer-ence(EMI)shielding and other integrated functions for wearable electronics.However,its insufficient change amplitude of resistance with compressive strain generally leads to a degradation of shielding performance during deformation.Here,an innovative loading strategy of conductive materials on polymer foam is proposed to significantly increase the contact probability and contact area of con-ductive components under compression.Unique inter-skeleton conductive films are constructed by loading alginate-decorated magnetic liquid metal on the poly-methacrylate films hanged between the foam skeleton(denoted as AMLM-PM foam).Traditional point contact between conductive skeletons under compression is upgraded to planar contact between conductive films.Therefore,the resistance change of AMLM-PM reaches four orders of magnitude under compression.Moreover,the inter-skeleton conductive films can improve the mechanical strength of foam,prevent the leakage of liquid metal and increase the scattering area of EM wave.AMLM-PM foam has strain-adaptive EMI shielding performance and shows compression-enhanced shielding effec-tiveness,solving the problem of traditional CPFs upon compression.The upgrade of resistance response also enables foam to achieve sensitive pressure sensing over a wide pressure range and compression-regulated Joule heating function.

外文关键词：

Inter-skeleton conductive filmsConductive polymer foamLiquid metalElectromagnetic interference shielding

作者：

Xufeng Li、Chunyan Chen、Zhenyang Li、Peng Yi、Haihan Zou、Gao Deng、Ming Fang、Junzhe He、Xin Sun、Ronghai Yu、Jianglan Shui、Caofeng Pan、Xiaofang Liu

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作者单位：

School of Materials Science and Engineering,Beihang University,Beijing 100191,People's Republic of China

Science and Technology On Electromagnetic Scattering Laboratory,Beijing Institute of Environmental Features,Beijing 100854,People's Republic of China

Tianmushan Laboratory,Xixi Octagon City,Yuhang District,Hangzhou 310023,People's Republic of China

Institute of Atomic Manufacturing,Beihang University,Beijing 100191,People's Republic of China

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出版年：

2025

DOI：

10.1007/s40820-024-01540-z

纳微快报(英文)

上海交通大学

纳微快报(英文)

ISSN：2311-6706

年,卷(期)：2025.17(3)