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Journal of Inorganic Materials, Volume. 38, Issue 7, 800(2023)

Hygrothermal Stability of Bi2Te3-based Thermoelectric Materials

Yani XIAO1... Jianan LYU1,2, Zhenming LI3, Mingyang LIU3, Wei LIU3, Zhigang REN4, Hongjing LIU4, Dongwang YANG1,* and Yonggao YAN1,* |Show fewer author(s)
Author Affiliations
  • 11. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
  • 22. Nanostructure Research Center, Wuhan University of Technology, Wuhan 430070, China
  • 33. Energy Storage and Electrotechnics Department, China Electric Power Research Institute, Beijing 100192, China
  • 44. SGCC Beijing Electric Power Research Institute, Beijing 100075, China
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    Figures & Tables(9)
    (a1, b1) XRD patterns of samples after storage in hygrothermal environment for different time with (a2, b2) EDS results of material surface after storage in hygrothermal environment for 600 h
    1. (a1, b1) XRD patterns of samples after storage in hygrothermal environment for different time with (a2, b2) EDS results of material surface after storage in hygrothermal environment for 600 h

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    Surface XPS spectra of n-type Bi2Se0.21Te2.79 material (a1-b1) before and (a2-b2) after storage in hygrothermal environment for 600 h
    2. Surface XPS spectra of n-type Bi2Se0.21Te2.79 material (a1-b1) before and (a2-b2) after storage in hygrothermal environment for 600 h

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    Surface XPS spectra of p-type Bi0.4Sb1.6Te3 material (a1-c1) before and (a2-c2) after storage in hygrothermal environment for 600 h
    3. Surface XPS spectra of p-type Bi0.4Sb1.6Te3 material (a1-c1) before and (a2-c2) after storage in hygrothermal environment for 600 h

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    FESEM images of (a1, a2) n-type Bi2Se0.21Te2.79 and (b1, b2) p-type Bi0.4Sb1.6Te3 material (a1, b1) before and (a2, b2) after storage in hygrothermal environment for 600 h
    4. FESEM images of (a1, a2) n-type Bi2Se0.21Te2.79 and (b1, b2) p-type Bi0.4Sb1.6Te3 material (a1, b1) before and (a2, b2) after storage in hygrothermal environment for 600 h

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    (a) TEM image of the area close to the surface of n-type Bi2Se0.21Te2.79 material exposed to hygrothermal environment for 600 h; (b) elemental surface distribution profiles of the square region in (a); (c) HRTEM image of the square region in (a); (d) IFFT image of (c); (e) HAADF-STEM image of the area close to the surface of p-type Bi0.4Sb1.6Te3 material exposed to hygrothermal environment and (f) its elemental surface distribution profiles of the region
    5. (a) TEM image of the area close to the surface of n-type Bi2Se0.21Te2.79 material exposed to hygrothermal environment for 600 h; (b) elemental surface distribution profiles of the square region in (a); (c) HRTEM image of the square region in (a); (d) IFFT image of (c); (e) HAADF-STEM image of the area close to the surface of p-type Bi0.4Sb1.6Te3 material exposed to hygrothermal environment and (f) its elemental surface distribution profiles of the region

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    Thermoelectric performance of n-type Bi2Se0.21Te2.79 in hygrothermal environment (85 ℃, 85% RH)
    S1. Thermoelectric performance of n-type Bi2Se0.21Te2.79 in hygrothermal environment (85 ℃, 85% RH)

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    Thermoelectric performance of p-type Bi0.4Sb1.6Te3 in hygrothermal environment (85 ℃, 85% RH)
    S2. Thermoelectric performance of p-type Bi0.4Sb1.6Te3 in hygrothermal environment (85 ℃, 85% RH)

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    FESEM images of samples exposed to hygrothermal environment for different time n-type Bi2Se0.21Te2.79: (a1) 200 h; (a2) 400 h; p-type Bi0.4Sb1.6Te3: (b1) 200 h; (b2) 400 h
    S3. FESEM images of samples exposed to hygrothermal environment for different time n-type Bi2Se0.21Te2.79: (a1) 200 h; (a2) 400 h; p-type Bi0.4Sb1.6Te3: (b1) 200 h; (b2) 400 h

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    • Table 1. Room temperature thermoelectric performance of n-type Bi2Se0.21Te2.79 and p-type Bi0.4Sb1.6Te3 materials before and after storage in hygrothermal environment (85 ℃, 85% RH) for 600 h

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      Table 1. Room temperature thermoelectric performance of n-type Bi2Se0.21Te2.79 and p-type Bi0.4Sb1.6Te3 materials before and after storage in hygrothermal environment (85 ℃, 85% RH) for 600 h

      Parameter at room temperaturen-type Bi2Se0.21Te2.79p-type Bi0.4Sb1.6Te3
      0 h600 h0 h600 h
      σ / (×104, S·m-1)9.457.799.128.69
      S / (μV·K-1)219224243220
      n / (×1019, cm-3)1.251.321.521.47
      μ / (cm2·V-1·s-1)470369375370
      PF / (mW·m-1·K-2)4.543.905.414.21
      κ / (W·m-1·K-1)1.401.481.311.29
      ZT0.970.791.240.97
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    Yani XIAO, Jianan LYU, Zhenming LI, Mingyang LIU, Wei LIU, Zhigang REN, Hongjing LIU, Dongwang YANG, Yonggao YAN. Hygrothermal Stability of Bi2Te3-based Thermoelectric Materials [J]. Journal of Inorganic Materials, 2023, 38(7): 800

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    Paper Information

    Category:

    Received: Dec. 5, 2022

    Accepted: --

    Published Online: Dec. 28, 2023

    The Author Email: YANG Dongwang (ydongwang@whut.edu.cn), YAN Yonggao (yanyonggao@whut.edu.cn)

    DOI:10.15541/jim20220736

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology