Achieving high thermoelectric performance of Cu1.8S composites with WSe2 nanoparticles

Qin, Peng1; Ge, Zhen-Hua1; Chen, Yue-Xing2; Chong, Xiaoyu3; Feng, Jing1; He, Jiaqing2

2018-08-24

10.1088/1361-6528/aac901

NANOTECHNOLOGY   影响因子和分区

0957-4484

1361-6528

Polycrystalline p-type Cu1.8S composites with WSe2 nanoparticles were fabricated by the mechanical alloying method combined with the spark plasma sintering technique. The Seebeck coefficient was significantly enhanced by the optimized carrier concentration, while the thermal conductivity was simultaneously decreased due to the refined grain and WSe2 nanoparticles. An enhanced Seebeck coefficient of 110 mu V K-1 and a reduced thermal conductivity of 0.68 W m(-1) K-1 were obtained for the Cu1.8S + 1 wt% WSe2 sample at 773 K, resulting in a remarkably enhanced peak ZT of 1.22 at 773 K, which is 2.5 times higher than that (0.49 at 773 K) of a pristine Cu1.8S sample. The cheap and environmentally friendly Cu1.8S-based materials with enhanced properties may find promising applications in thermoelectric devices.

Cu1.8S WSe2 thermoelectric low thermal conductivity

SCI ; EI

英语

通讯

Science, Technology, and Innovation Commission of Shenzhen Municipality[KQCX2015033110182370] ; Science, Technology, and Innovation Commission of Shenzhen Municipality[JCYJ20150831142508365]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000435578300001

IOP PUBLISHING LTD

20182705401530

Carrier concentration ; Mechanical alloying ; Nanoparticles ; Seebeck coefficient ; Spark plasma sintering ; Thermal conductivity ; Thermoelectricity ; Tungsten alloys

Metallurgy and Metallography:531 ; Tungsten and Alloys:543.5 ; Thermodynamics:641.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Solid State Physics:933

MATERIALS SCIENCE

Web of Science

1.Kunming Univ Sci & Technol, Fac Mat Sci & Technol, Kunming 650093, Yunnan, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

Qin, Peng,Ge, Zhen-Hua,Chen, Yue-Xing,et al. Achieving high thermoelectric performance of Cu1.8S composites with WSe2 nanoparticles[J]. NANOTECHNOLOGY,2018,29(34).

Qin, Peng,Ge, Zhen-Hua,Chen, Yue-Xing,Chong, Xiaoyu,Feng, Jing,&He, Jiaqing.(2018).Achieving high thermoelectric performance of Cu1.8S composites with WSe2 nanoparticles.NANOTECHNOLOGY,29(34).

Qin, Peng,et al."Achieving high thermoelectric performance of Cu1.8S composites with WSe2 nanoparticles".NANOTECHNOLOGY 29.34(2018).