Ultrahigh figure-of-merit of Cu2Se incorporated with carbon coated boron nanoparticles  

作　　者：Meng Li Sheik MdKazi Nazrul Islam Mujde Yahyaoglu Deng Pan Xun Shi Lidong Chen Umut Aydemir Xiaolin Wang 

机构地区：[1]Institute for Superconducting and Electronic Materials,Australian Institute for Innovative Materials,University of Wollongong,North Wollongong,NSW,Australia [2]Graduate School of Sciences and Engineering,KoçUniversity,Sariyer,Istanbul,Turkey [3]Shandong YiAn Bio-Engineering Co.,Ltd.,Jinan,Shandong,China [4]State Key Laboratory of High Performance Ceramics and Superfine Microstructures,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,P.R.China [5]Department of Chemistry,KoçUniversity,Sariyer,Istanbul,Turkey [6]KoçUniversity Akkim Boron-Based Materials and High Technology Chemicals Research and Application Center,Sariyer,Istanbul,Turkey [7]ARC Centre of Excellence in Future Low-Energy Electronics Technologies,University of Wollongong,Australia

出　　处：《InfoMat》2019年第1期108-115,共8页信息材料（英文）

基　　金：This work was partially supported by the Australian Research Council(ARC)through a Discovery Project(DP 130102956,XLW);an ARC Professorial Future Fellowship project(FT 130100778,XLW);Linkage Infrastructure Equipment and Facilities(LIEF)Grant(LE 120100069,XLW);the ARC Centre of Excellence in Future Low-Energy Electronics Technologies(FLEET,CE170100039);LIEF(LE120100104).

摘　　要：Cu2Se based thermoelectric materials are of great potential for high-temperature energy harvesting due to their high-temperature figure-of-merit(zT).For further development of Cu2Se,both engineering and mid-temperature figure-of-merit need to be improved.In this work,we report that carbon-coated boron(C/B)nanoparticles incorporation can significantly improve both mid-and high-temperature zT in Cu2Se.The nanoparticle inclusions can result in a homogeneous distribution of Cu:C:B interfaces responsible for both improvement of the Seebeck coefficient and significantly reduction in thermal conductivity.Ultrahigh mid-and high temperature thermoelectric performance with zT=1.7 at 700 K and 2.23 at 1000 K as well as significantly improved engineering zT are achieved in the C/B incorporated Cu2Se with desirable mechanical properties and cycling stability.Our findings will stimulate further study and exploration for the Cu2Se based thermoelectric materials for broad applications in converting waste heat to electricity with competitive energy conversion efficiency.

关 键 词：average/engineering zT mid-temperature zT nanoparticle incorporation THERMOELECTRIC 

分 类 号：TG1[金属学及工艺—金属学]