Heterogeneous network of 2D MOFs decorated 1D CNTs imparting multiple functionalities to composite phase change materials  

作　　者：Xuemei Diao Xiaowei Zhang Yang Li Xiao Chen Zhiyong Zhao Peng Wang Panpan Liu Hongyi Gao Ge Wang 

机构地区：[1]Institute of Advanced Materials,Beijing Normal University,Beijing 100875,China [2]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,Beijing100083,China [3]Shunde Innovation School,University of Science and Technology Beijing,Shunde 528399,China

出　　处：《Nano Research Energy》2024年第3期17-27,共11页纳米能源研究（英文）

基　　金：supported by the Beijing Natural Science Foundation(No.2232053);the National Natural Science Foundation of China(No.52002029);Natural Science Foundation of Guangdong Province(No.2022A1515011918);Scientific and Technological Innovation Foundation of Shunde Graduate School,University of Science and Technology Beijing(No.BK20AE003).

摘　　要：Advanced multifunctional composite phase change materials(PCMs)for integrating energy storage,photothermal conversion and microwave absorption can promote the development of next-generation miniaturized electronic devices.Here,we report paraffin wax(PW)-based multifunctional composite PCMs with a hierarchical network structure assembled by two‐dimensional(2D)nickel-based metal-organic frameworks(Ni-MOFs)decorated carbon nanotubes(CNTs).The PW/CNTs@Ni-MOF composite PCMs yield an excellent photothermal energy conversion efficiency of 93.2%,as well as a good phase change enthalpy of 126.5 J/g and prominent thermal stability.Preferably,the composite PCMs also present great microwave absorption with-25.32 dB minimum reflection loss(RLmin)at 9.85 GHz.The remarkable features of the composite PCMs lie in their hierarchical network architecture and the synergistic enhancement of CNTs and MOFs,giving rise to the increased surface area,accelerated photon capture and transmission,and enhanced dielectric loss caused by polarization effects and multiple reflections,thus further boosting the latent energy storage capacity,photothermal kinetics,and microwave reflection loss.This work provides a facile and scalable approach to regulating the multifunction of composite PCMs.

关 键 词：phase change material metal-organic framework carbon nanotube photothermal conversion thermal energy storage 

分 类 号：TB33[一般工业技术—材料科学与工程]