首页|Polydopamine-coated metal-organic framework-based composite phase change materials for photothermal conversion and storage

Polydopamine-coated metal-organic framework-based composite phase change materials for photothermal conversion and storage

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The liquid leakage and weak solar absorption capacity of organic phase change materials(PCMs)seri-ously hinder the efficient utilization of solar energy and thermal energy storage.To address these is-sues,we prepared nanoporous metal organic framework(Ni-MOF)for the vacuum infiltration of paraf-fin wax(PW),followed by the coating of solar-absorbing functional polydopamine(PDA)on the surface of PW@MOF for photothermal conversion and storage.As an efficient photon harvester,PDA coating endows PW@MOF/PDA composite PCMs with excellent photothermal conversion and storage properties due to the robust broadband solar absorption capability in the UV-vis region.Resultantly,our prepared PW@MOF/PDA composite PCMs exhibit a high photothermal conversion and storage efficiency of 91.2％,while that of PW@MOF composite PCMs is only zero.In addition,PW@MOF/PDA composite PCMs also exhibit excellent thermal stability,shape stability,energy storage stability,and photothermal conversion stability.More importantly,this coating strategy is universal by integrating different MOFs and solar ab-sorbers,showing the potential to accelerate the major breakthroughs of high-efficiency MOF-based pho-tothermal composite PCMs in solar energy utilization.

Phase change materialsMetal organic frameworksPhotothermal conversionThermal energy storagePhoton harvester

Ang Li、Mengke Huang、Die Hu、Zhaodi Tang、Jianhang Xu、Yang Li、Xiaowei Zhang、Xiao Chen、Ge Wang

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School of Materials Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China

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

Institute of Advanced Materials,Beijing Normal University,Beijing 100875,China

Key Laboratory of Low-grade Energy Utilization Technologies and Systems(Chongqing University),Ministry of Education of China,Chongqing University,Chongqing 400044,China

Shunde Graduate School,University of Science and Technology Beijing,Shunde 528399,China

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National Natural Science Foundation of ChinaKey Laboratory of Lowgrade Energy Utilization Technologies and Systems(Chongqing University)Ministry of Education of China,Chongqing UniversityFundamental Research Funds for the Jiangsu Province UniversitiesNatural Science Foundation of Jiangsu ProvinceFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesChina Postdoctoral Science FoundationChina Postdoctoral Science FoundationScientific and Technological Innovation Foundation of Shunde Graduate School,University of Science and Technology Beijing

51902025LLEUTS-20223220KJB430037BK202206372019NTST29FRF-BD-20-07A2020T1300602019M660520BK20AE003

2023

10.1016/j.cclet.2022.107916

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCDCSCD北大核心
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2023.34(8)
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