Enhanced Thermoelectricity in High-Temperature β-Phase Copper(I) Selenides Embedded with Cu2Te Nanoclusters

被引：52
|
作者：
Butt, Sajid [1 ,2 ]
Xu, Wei [3 ,6 ]
Farooq, Muhammad U. [4 ]
Ren, Guang K. [1 ]
Zhang, Qinghua [1 ]
Zhu, Yingcai [3 ]
Khan, Sajid U. [2 ]
Liu, Lijuan [5 ]
Yu, Meijuan [3 ]
Mohmed, Fida [1 ]
Lin, Yuanhua [1 ]
Nan, Ce-Wen [1 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Inst Space Technol, Dept Mat Sci & Engn, Islamabad 44000, Pakistan
[3] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
[4] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
[5] Zhengzhou Univ, Dept Phys, 100 Sci Ave, Zhengzhou 450001, Henan, Peoples R China
[6] Rome Int Ctr Mat Sci Superstripes, RICMASS, Via Sabelli 119A, I-00185 Rome, Italy
来源：
ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 24期
关键词：
Cu2Se; Cu2Te nanoclusters; nanoscale heat management; superionic conductors; ZT; ULTRALOW THERMAL-CONDUCTIVITY; PERFORMANCE; CU2SE; TRANSFORMATION; SCATTERING; ELECTRON; CRYSTAL; CUSE;
D O I：
10.1021/acsami.6b02086
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We report remarkably enhanced thermoelectric performance of Te doped Cu2Se in midtemperature range. Through ball-milling process followed by spark plasma sintering (SPS), nanoscale Cu2Te clusters were embeded in the matrix of Cu2Se, inducing a drastic enhancement of thermoelectric performance by reducing the thermal conductivity without degrading the power factor. A large ZT value of 1.9 was achieved at 873 K for Cu2Se1.9Te0.1, which is about 2 times larger than that of the pure Cu2Se. The nanoscale heat management by Cu2Te nanoclusters in superionic conductors opens up an avenue for thermoelectric materials research.
引用
收藏
页码：15196 / 15204
页数：9
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