Conventional sintered Cu2-xSe thermoelectric material

被引：27

作者：

Geng, Zhiming ^{[1
]}

Shi, Dongliang ^{[1
]}

Shi, Lu ^{[1
]}

Li, Ying ^{[1
]}

Snyder, G. Jeffrey ^{[2
]}

Lam, Kwok-ho ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China

[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

来源：

JOURNAL OF MATERIOMICS | 2019年 / 5卷 / 04期

关键词：

Thermoelectric; Copper selenide; Copper-vacancy engineering; Effective mass model; FIGURE-OF-MERIT; THERMAL-CONDUCTIVITY; PHASE-TRANSITION; PERFORMANCE; ENHANCEMENT; EFFICIENCY; POWER; STABILITY; HEAT;

D O I：

10.1016/j.jmat.2019.06.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

As the featured material of the superionic thermoelectric (TE) material family, copper-chalcogenide Cu2-xSe is attracting growing research interest for its excellent TE performance derived from the satisfactory power factor and the ultra-low thermal conductivity induced by the superionic effect. Various efforts have been made and proved to be effective to further enhance the TE performance for Cu2-xSe. However, this material is still far from the application stage, which is mainly due to concerns regarding control of the properties and the costly complex fabrication technology. Here we report a scalable pathway to achieve high-performance and tunable Cu2-xSe, utilizing conventional sintering technology and copper (Cu)-vacancy engineering with an effective mass model. The figure of merit zT is a competitive value of 1.0 at 800 K for the optimized binary Cu2-xSe, based on the precise modeling prediction and Cu-vacancy engineering. The changes in TE properties of Cu2-xSe under heating-cooling cycle tests are also revealed. Our work offers the referable method along with the decent parent material for further enhancement of TE performance, paving a possible route for the application and industrialization of Cu2-xSe TE materials. (C) 2019 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.

引用

页码：626 / 633

页数：8

共 59 条

[1]

[Anonymous], SCIENCE

[2] Cooling, heating, generating power, and recovering waste heat with thermoelectric systems [J].

Bell, Lon E. .

SCIENCE, 2008, 321 (5895) :1457-1461

[3] High thermoelectric performance of (AgCrSe2)0.5(CuCrSe2)0.5 nano-composites having all-scale natural hierarchical architectures [J].

Bhattacharya, Shovit ;

Bohra, Anil ;

Basu, Ranita ;

Bhatt, Ranu ;

Ahmad, Sajid ;

Meshram, K. N. ;

Debnath, A. K. ;

Singh, Ajay ;

Sarkar, Shaibal K. ;

Navneethan, M. ;

Hayakawa, Y. ;

Aswal, D. K. ;

Gupta, S. K. .

JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (40) :17122-17129

[4] High-performance bulk thermoelectrics with all-scale hierarchical architectures [J].

Biswas, Kanishka ;

He, Jiaqing ;

Blum, Ivan D. ;

Wu, Chun-I ;

Hogan, Timothy P. ;

Seidman, David N. ;

Dravid, Vinayak P. ;

Kanatzidis, Mercouri G. .

NATURE, 2012, 489 (7416) :414-418

[5] Relating phase transition heat capacity to thermal conductivity and effusivity in Cu2Se [J].

Brown, David R. ;

Heijl, Richard ;

Borup, Kasper A. ;

Iversen, Bo B. ;

Palmqvist, Anders ;

Snyder, G. J. .

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2016, 10 (08) :618-621

[6] Phase transition enhanced thermoelectric figure-of-merit in copper chalcogenides [J].

Brown, David R. ;

Day, Tristan ;

Borup, Kasper A. ;

Christensen, Sebastian ;

Iversen, Bo B. ;

Snyder, G. Jeffrey .

APL MATERIALS, 2013, 1 (05)

[7] Minority carrier barrier heterojunctions for improved thermoelectric efficiency [J].

Burke, Peter G. ;

Curtin, Benjamin M. ;

Bowers, John E. ;

Gossard, Arthur C. .

NANO ENERGY, 2015, 12 :735-741

[8] Denoising method of heart sound signals based on self-construct heart sound wavelet [J].

Cheng, Xiefeng ;

Zhang, Zheng .

AIP ADVANCES, 2014, 4 (08)

[9] Avoided crossing of rattler modes in thermoelectric materials [J].

Christensen, Mogens ;

Abrahamsen, Asger B. ;

Christensen, Niels B. ;

Juranyi, Fanni ;

Andersen, Niels H. ;

Lefmann, Kim ;

Andreasson, Jakob ;

Bahl, Christian R. H. ;

Iversen, Bo B. .

NATURE MATERIALS, 2008, 7 (10) :811-815

[10] Thermoelectric cooling and power generation [J].

DiSalvo, FJ .

SCIENCE, 1999, 285 (5428) :703-706

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