IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v16y2025i1d10.1038_s41467-025-62902-8.html
   My bibliography  Save this article

Boosting carrier mobility in MgAgSb via in-situ InSb nanoprecipitates for high-efficiency segmented thermoelectric module

Author

Listed:
  • Liangjun Xie

    (Harbin Institute of Technology
    Harbin Institute of Technology)

  • Haoyang Tong

    (Harbin Institute of Technology)

  • Guyang Peng

    (Xi’an Jiaotong University)

  • Hao Wu

    (Harbin Institute of Technology)

  • Wenjing Shi

    (Harbin Institute of Technology)

  • Kuai Yu

    (Harbin Institute of Technology)

  • Jinsuo Hu

    (Harbin Institute of Technology)

  • Lei Jiao

    (Harbin Institute of Technology)

  • Xingyan Dong

    (Harbin Institute of Technology)

  • Fengkai Guo

    (Harbin Institute of Technology)

  • Wei Cai

    (Harbin Institute of Technology)

  • Yang Zhang

    (Xi’an Jiaotong University)

  • Haijun Wu

    (Xi’an Jiaotong University)

  • Zihang Liu

    (Harbin Institute of Technology)

  • Jiehe Sui

    (Harbin Institute of Technology)

Abstract

Carrier mobility has conventionally been manipulated to enhance thermoelectric performance by reducing crystal defects. Therefore, an effective strategy for optimizing carrier mobility is highly desired for nanostructured materials. In this work, InSb nanoprecipitates are formed in situ within the nanostructured MgAgSb matrix, serving as channels for accelerating charge carriers. A high carrier mobility of 93.1 cm2 V-1 s-1 is achieved in MgAg0.97Sb0.99-0.02InSb composite at 300 K, resulting in an average power factor of 23.8 μW cm-1 K-2 from 300 K to 553 K. To address the efficiency degradation caused by the narrow operational temperature range of MgAgSb, a two-pair segmented thermoelectric module is developed. A high conversion efficiency of 12.4% is achieved under a cold-side temperature of ~293 K and a temperature difference of ~540 K, presenting an effective strategy for carrier mobility optimization and opening new avenues for medium-temperature waste heat harvesting using MgAgSb.

Suggested Citation

  • Liangjun Xie & Haoyang Tong & Guyang Peng & Hao Wu & Wenjing Shi & Kuai Yu & Jinsuo Hu & Lei Jiao & Xingyan Dong & Fengkai Guo & Wei Cai & Yang Zhang & Haijun Wu & Zihang Liu & Jiehe Sui, 2025. "Boosting carrier mobility in MgAgSb via in-situ InSb nanoprecipitates for high-efficiency segmented thermoelectric module," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-62902-8
    DOI: 10.1038/s41467-025-62902-8
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-025-62902-8
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-025-62902-8?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-62902-8. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.