Thermoelectric properties of Ag-doped compound:Mg_(3-x)Ag_(x)Sb_(2)

查看全文 作　　者：Yanan [1]Fu;Xin [1]Zhang;Hongliang [1]Liu;Jie [1]Tian;Jiuxing [1,2]Zhang

机构地区：[1]College of Materials Science and Engineering,Beijing University of Technology,Key Laboratory of Advanced Functional Materials,Ministry of Education,Beijing 100124,China;[2]School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China

出　　处：《Journal of Materiomics》索引2018年第4卷第1期,共5页

基　　金：This work is supported by National Natural Science Foundation of China(Grant No.51371010,51572066,50801002);the Beijing Municipal Natural Science Foundation(Grant No.2112007). 摘　　要：Mg_(3)Sb_(2)-based thermoelectric materials have poor electrical conductivity which is the key to limit thermoelectric performance that need to be solved.Herein we tuned the carrier concentration of Mg_(3)Sb_(2)-based materials via Ag doping at the Mg sites(at two distinct crystallographic sites)to enhance the electrical performance.Mg_(3-x)Ag_(x)Sb_(2)(0≤x≤0.05)has been prepared successfully by vacuum suspension smelting plus Spark Plasma Sintering technique.Using the vacuum suspension smelting plus Spark Plasma Sintering method,we proved that Ag doping can precisely tune the electrical transport properties and accordingly enhance the power factor.Moreover,the Ag doping leads to a low lattice thermal conductivity due to phonons scattering,and the maximal thermoelectric figure of merit ZT for Mg_(3-x)Ag_(x)Sb_(2)reaches 0.66 at 773 K. 关键词：Mg_(3)Sb_(2) Thermoelectric performance Vacuum suspension smelting SINTERING

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Thermoelectric properties of Ag-doped compound:Mg_(3-x)Ag_(x)Sb_(2)

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