Integrating thermal energy storage and microwave absorption in phase change material-encapsulated core-sheath MoS_(2)@CNTs  

作　　者：Panpan Liu Yang Li Zhaodi Tang Junjun Lv Piao Cheng Xuemei Diao Yu Jiang Xiao Chen Ge Wang 

机构地区：[1]Institute of Advanced Materials,Beijing Normal University,Beijing 100875,China [2]College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China [3]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

出　　处：《Journal of Energy Chemistry》2023年第9期41-49,共9页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China (51902025);China Postdoctoral Science Foundation (2020T130060 and 2019M660520)。

摘　　要：Developing advanced nanocomposite integrating solar-driven thermal energy storage and thermal management functional microwave absorption can facilitate the cutting-edge application of phase change materials(PCMs).To conquer this goal,herein,two-dimensional MoS_(2) nanosheets are grown in situ on the surface of one-dimensional CNTs to prepare core-sheath MoS_(2)@CNTs for the encapsulation of paraffin wax(PW).Benefiting from the synergistic enhancement photothermal effect of MoS_(2) and CNTs,MoS_(2)@CNTs is capable of efficiently trapping photons and quickly transporting phonons,thus yielding a high solar-thermal energy conversion and storage efficiency of 94.97%.Meanwhile,PW/MoS_(2)@CNTs composite PCMs exhibit a high phase change enthalpy of 101.60 J/g and excellent lo ng-term thermal storage durability after undergoing multiple heating-cooling cycles.More attractively,PW/MoS_(2)@CNTs composite PCMs realize thermal management functional microwave absorption in heat-related electronic application scenarios,which is superior to the single microwave absorption of traditional materials.The minimum reflection loss(RL) for PW/MoS_(2)@CNTs is-28 dB at 12.91 GHz with a 2.0 mm thickness.This functional integration design provides some insightful references on developing advanced microwave absorbing composite PCMs,holding great potential towards high-efficiency solar energy utilization and thermally managed microwave absorption fields.

关 键 词：Phase change materials Core-sheath MoS_(2)@CNTs Solar-thermal energy conversion Thermal energy storage Microwave absorption 

分 类 号：TB34[一般工业技术—材料科学与工程]