Enhanced TE properties of Cu@Ag/Bi2Te3 nanocomposites by decoupling electrical and thermal properties

作     者：Xiaofang Lu Qi Zheng Shijia Gu Rui Guo Li Su Jiancheng Wang Zhenxing Zhou Yuchi Fan Wan Jiang Lianjun Wang Xiaofang Lu;Qi Zheng;Shijia Gu;Rui Guo;Li Su;Jiancheng Wang;Zhenxing Zhou;Yuchi Fan;Wan Jiang;Lianjun Wang

作者机构：State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China Institute of Functional MaterialsDonghua UniversityShanghai 201620China School of Material Science and EngineeringJingdezhen Ceramic InstituteJindezhen 333000China Engineering Research Center of Advanced Glasses Manufacturing TechnologyMinistry of EducationShanghai 201620China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2020年第31卷第3期

页      面：880-884页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：funded by the National Natural Science Foundation of China(Nos.51774096,51871053) Shanghai Committee of Science and Technology(Nos.16JC1401800,18JC1411200) the Fundamental Research Funds for the Central Universities(No.19D110625) Program of Innovative Research Team in University of Ministry of Education of China(No.IRT16R13) 

主　　题：Cu@Ag Thermoelectric Bi2Te3 ZT Decoupling effect 

摘      要：Cu@Ag/Bi2Te3 nanocomposites were prepared for the first time by ultrasonic dispersion-rapid freezedrying method combined with spark plasma sintering(SPS).By changing the content of Cu@Ag nanoparticle,we could modulate the temperature dependent thermoelectric *** highest ZT value can be obtained at 450 K for 1 vol%Cu@Ag/Bi2Te3,which is benefited from the decoupling of electrical and thermal *** the increase of electrical conductivity,the absolute value of Seebeck coefficient lifts while the thermal conductivity ***,the average ZT value between 300 K and 475 K was 0.61 for 1 vol%Cu@Ag/Bi2Te3,which is much higher than that of pristine Bi2 ***,the decoupling effect of Cu@Ag nanoparticles incorporation could be a promising method to broaden the application of Bi2Te3 based thermoelectric materials.