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Author:

Zhu, Huaxing (Zhu, Huaxing.) | Zhao, Ting (Zhao, Ting.) | Zhang, Bin (Zhang, Bin.) | An, Zibing (An, Zibing.) | Mao, Shengcheng (Mao, Shengcheng.) | Wang, Guoyu (Wang, Guoyu.) | Han, Xiaodong (Han, Xiaodong.) | Lu, Xu (Lu, Xu.) | Zhang, Jiangwei (Zhang, Jiangwei.) | Zhou, Xiaoyuan (Zhou, Xiaoyuan.)

Indexed by:

EI Scopus SCIE

Abstract:

Developing high performance n-type thermoelectric (TE) materials is fundamentally important for developing high efficiency TE devices. AgBiSe2, which reveals superior n-type TE performance in a cubic phase, crystallizes in a hexagonal phase at room temperature, and typically, undergoes phase transitions to a cubic phase at a temperature above 580 K. Here, for the first time, through entropy optimization with lead-selenides (>= 9.9 mol%), the high-temperature cubic phase of AgBiSe2 is stabilized from 300 to 800 K. Furthermore, the AgBiSe2-PbSe pseudo-binary diagram is established. The resultant alloys with optimized entropy possess unique local distorted cubic lattices, which contribute low lattice thermal conductivity approaching 0.3 W m(-1) K-1 in extended operating temperature range. Consequently, a peak figure of merit zT value of approximate to 0.8 at 800 K and a record-high average zT value of 0.42 for n-type I-V-VI2 compounds are attained in pure phase cubic n-type (AgBiSe2)(1-)(x)(PbSe)(x) solid solutions. These results pave the way for developing new TE materials via entropy engineering.

Keyword:

(2) cubic AgBiSe thermoelectric performance phase transitions entropy engineering local structure distortion

Author Community:

  • [ 1 ] [Zhu, Huaxing]Chongqing Univ, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
  • [ 2 ] [Zhao, Ting]Chongqing Univ, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
  • [ 3 ] [Lu, Xu]Chongqing Univ, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
  • [ 4 ] [Zhou, Xiaoyuan]Chongqing Univ, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
  • [ 5 ] [Zhang, Bin]Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
  • [ 6 ] [Zhou, Xiaoyuan]Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
  • [ 7 ] [An, Zibing]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 8 ] [Mao, Shengcheng]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 9 ] [Han, Xiaodong]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
  • [ 10 ] [Wang, Guoyu]Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
  • [ 11 ] [Zhang, Jiangwei]Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
  • [ 12 ] [Zhang, Jiangwei]Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Reprint Author's Address:

  • [Lu, Xu]Chongqing Univ, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China;;[Zhou, Xiaoyuan]Chongqing Univ, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China;;[Zhou, Xiaoyuan]Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China;;[Zhang, Jiangwei]Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China;;[Zhang, Jiangwei]Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

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Source :

ADVANCED ENERGY MATERIALS

ISSN: 1614-6832

Year: 2020

Issue: 5

Volume: 11

2 7 . 8 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:169

Cited Count:

WoS CC Cited Count: 67

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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