# High-performance Mg3Sb2-based thermoelectrics with reduced structural disorder and microstructure evolution

https://mdr.nims.go.jp/datasets/c2ad3b54-c62e-4054-abd7-d9dd1490927c

## File

- [Nature Communications--High-performance Mg3Sb2-based thermoelectrics with reduced structural disorder and microstructure evolution.pdf](https://mdr.nims.go.jp/filesets/0f386dac-c5ac-4aba-942b-43f4f2ec1d52/download) ([Detail](https://mdr.nims.go.jp/filesets/0f386dac-c5ac-4aba-942b-43f4f2ec1d52.md))

## Id

c2ad3b54-c62e-4054-abd7-d9dd1490927c

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-05T11:15:49.551891Z

## Updated at

2024-10-11T07:30:23.472614Z

## Published at

2024-10-11T07:30:24.737022Z

## Doi



## First published url

https://doi.org/10.1038/s41467-024-51120-3

## Date published

2024-08-09

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: High-performance Mg3Sb2-based thermoelectrics with reduced structural disorder
    and microstructure evolution
  title_type: original
  lang: en

## Description

- description: Mg3Sb2-based thermoelectrics show great promise for next-generation
    thermoelectric power generators and coolers owing to their excellent figure of
    merit (zT) and earth-abundant composition elements. However, the complexity of
    the defect microstructure hinders the advancement of high performance. Here, the
    defect microstructure is modified via In doping and prolonged sintering time to
    realize the reduced structural disorder and microstructural evolution, synergistically
    optimizing electron and phonon transport via a delocalization effect. As a result,
    an excellent carrier mobility of ~174 cm2 V-1 s-1 and ultralow κ_lat of ~0.42
    W m-1 K-1 was realized in this system, leading to an ultrahigh zT of ~2.0 at 723
    K. The corresponding single-leg module demonstrated a high conversion efficiency
    of ~12.6% with a 425 K temperature difference, and the two-pair module of Mg3Sb2/MgAgSb
    displayed ~7.1% conversion efficiency with a 276 K temperature difference. This
    work paves a pathway to improve the thermoelectric performance of Mg3Sb2-based
    materials, and represents a significant step forward for the practical application
    of Mg3Sb2-based devices.
  description_type: abstract
  lang: und

## Creator

- name: Longquan Wang
  role: author
  orcid: https://orcid.org/0009-0009-9910-9770
  organization: National Institute for Materials Science
- name: Wenhao Zhang
  role: author
  organization: National Institute for Materials Science
- name: Song Yi Back
  role: author
  orcid: https://orcid.org/0009-0000-8890-1484
  organization: National Institute for Materials Science
- name: Naoyuki Kawamoto
  role: author
  orcid: https://orcid.org/0000-0002-2022-3987
  organization: National Institute for Materials Science
- name: Duy Hieu Nguyen
  role: author
  orcid: https://orcid.org/0000-0002-6938-6517
  organization: National Institute for Materials Science
- name: Takao Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: thermoelectric materials
  schema: not_defined
- subject: thermoelectric device
  schema: not_defined
- subject: power generation
  schema: not_defined
- subject: conversion efficiency
  schema: not_defined
- subject: thermoelectric module
  schema: not_defined
- subject: thermoelectrics
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '15'
  issue: '1'
  article_number: '6800'

## Conference



## Related item



## Funding

- identifier: JPMJMI19A1
  funder_name: MEXT | Japan Science and Technology Agency

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 0f386dac-c5ac-4aba-942b-43f4f2ec1d52
  filename: Nature Communications--High-performance Mg3Sb2-based thermoelectrics with
    reduced structural disorder and microstructure evolution.pdf
  content_type: application/pdf
  size: 2016420
  md5: 5b90c17cab3059fea28c9e622200daea

## Thumbnail

fileset_id: 0f386dac-c5ac-4aba-942b-43f4f2ec1d52
filename: Nature Communications--High-performance Mg3Sb2-based thermoelectrics with
  reduced structural disorder and microstructure evolution.pdf