无机材料学报2023，Vol.38Issue(11)：1338-1344,7.DOI:10.15541/jim20230197
UiO-67基导电复合材料的制备及其热电性能研究
UiO-67 Based Conductive Composites:Preparation and Thermoelectric Performance
摘要
Abstract
Thermoelectric materials are functional materials that can realize the direct conversion between heat and electricity,which have great prospects in the field of green refrigeration and waste heat recovery.To date,researches on thermoelectric materials mainly focus on semiconducting inorganic materials and conductive polymers.Although great progress has been made regarding material design and performance improvement,it is still of great significance to explore and expand thermoelectric candidates for potential application.Metal-organic frameworks(MOFs)are porous extended solids formed by coordination bonds between organic ligands and metal ions or metal clusters.They are promising candidates in the field of thermoelectrics due to their unique porous structure as well as tunable composition and structure,which could meet the requirement of"electron crystal-phonon glass".In this work,conductive polymer,poly(3,4-vinyl dioxythiophene)(PEDOT)was in-situ polymerized in Zr-based MOFs UiO-67 through"conductive guest-promoted transport"approach.The confined effects originated from porous structures of MOFs on molecular chains of PEDOT effectively improve electrical conductivity of the composites.As a result,the prepared composites exhibit an electrical conductivity up to 5.96×10-3 S·cm-1 at room temperature,which is one order of magnitude higher than the corresponding PEDOT.Correspondingly,their power factor(PF)is up to 3.67×10-2 nW·m-1·K-2 at room temperature.In conclusion,this work uses ordered porous structures of MOFs as reaction platform and constructs conductive polymer/MOFs conductive materials by facile in-situ polymerization methods,providing a reference for further development of MOFs-based thermoelectric materials.关键词
金属-有机框架/聚3,4-乙烯二氧噻吩(PEDOT)/电子传输/热电性能Key words
metal-organic framework/poly(3,4-ethyldioxythiophene)/electrical conductivity/thermoelectric property分类
化学化工引用本文复制引用
江润璐,吴鑫,郭昊骋,郑琦,王连军,江莞..UiO-67基导电复合材料的制备及其热电性能研究[J].无机材料学报,2023,38(11):1338-1344,7.基金项目
中央高校基本科研业务费专项资金(2232020A-02)Fundamental Research Funds for the Central University(2232020A-02) （2232020A-02）
