Multifunction integration within magnetic CNT-bridged MXene/CoNi based phase change materials  

作　　者：Yan Gao Xiao Chen Xu Jin Chenjun Zhang Xi Zhang Xiaodan Liu Yinhui Li Yang Li Jinjie Lin Hongyi Gao Ge Wang 

机构地区：[1]Beijing Advanced Innovation Center for Materials Genome Engineering,Beijing Key Laboratory of Function Materials for Molecule&Structure Construction,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China [2]School of Physics and Astronomy,Beijing Normal University,Beijing 100875,China [3]Research Institute of Petroleum Exploration&Development,PetroChina,Beijing 100083,China [4]Micro-Nano System Research Center,College of Information and Optical Engineering,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China [5]Shunde Graduate School,University of Science and Technology Beijing,Shunde 528399,China

出　　处：《eScience》2024年第6期108-117,共10页电化学与能源科学(英文)

基　　金：financially supported by the National Natural Science Foundation of China(No.51902025 and 52373261).

摘　　要：Developing advanced nanocomposite phase change materials(PCMs)integrating zero-energy thermal management,microwave absorption,photothermal therapy and electrical signal detection can promote the leapfrog development of flexible wearable electronic devices.For this goal,we propose a multidimensional collaborative strategy combining two-dimensional(2D)MXene nanosheets with metal-organic framework-derived onedimensional(1D)carbon nanotubes(CNTs)and zero-dimensional(0D)metal nanoparticles.After encapsulating paraffin wax(PW)in three-dimensional(3D)networked multidimensional MXene/CoNi-C,the resulting composite PCMs exhibit excellent thermal energy storage capacity and long-term thermally reliable stability.Benefiting from the synergistically enhanced photothermal effects of CNTs,Co/Ni nanoparticles and MXene,PW@MXene/CoNi-C can capture photons efficiently and transfer phonons quickly,yielding an ultrahigh photothermal conversion and storage efficiency of 97.5%.Additionally,PW@MXene/CoNi-C composite PCMs exhibit high microwave absorption with a minimum reflection loss of -49.3 dB at 8.03 GHz in heat-related electronic application scenarios.More attractively,the corresponding flexible phase change film can simultaneously achieve thermal management and electromagnetic shielding of electronic devices,as well as photothermal therapy and electrical signal detection for individuals.This functional integration design provides an important reference for developing advanced flexible multifunctional wearable materials and devices.

关 键 词：Phase change materials Metal-organic frameworks Two-dimensional MXene Photothermal conversion Thermal energy storage Microwave absorption 

分 类 号：TB3[一般工业技术—材料科学与工程]