# High Conversion Efficiency in Intrinsic High Power‐Density Mg                    <sub>2</sub>                    Sn‐GeTe Thermoelectric Generator

https://mdr.nims.go.jp/datasets/c23c274d-0969-494e-9cc2-633be59c7016

## Files

- [Advanced Science--High Conversion Efficiency in Intrinsic High Power‐Density Mg2Sn‐GeTe Thermoelectric.pdf](https://mdr.nims.go.jp/filesets/a1753563-2dff-4fa2-aa7f-5ba249bbc0de/download) ([Detail](https://mdr.nims.go.jp/filesets/a1753563-2dff-4fa2-aa7f-5ba249bbc0de.md))

## Id

c23c274d-0969-494e-9cc2-633be59c7016

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-08T15:18:46.397235Z

## Updated at

2025-11-10T23:30:10.065241Z

## Published at

2025-11-10T23:22:16.058634Z

## Doi



## First published url

https://doi.org/10.1002/advs.202506997

## Date published

2025-07-30

## Recorded date published

2025-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: High Conversion Efficiency in Intrinsic High Power‐Density Mg                    <sub>2</sub>                    Sn‐GeTe
    Thermoelectric Generator
  title_type: original
  lang: en

## Description

- description: Thermoelectric generators (TEGs) offer a sustainable solution for thermal
    energy harvesting, where maximizing energy output necessitates achieving both
    high power density and high conversion efficiency. However, TEGs with intrinsically
    high power density by employing high power factor materials, often face efficiency
    limitations due to their usually high thermal conductivity. Here, we present intrinsically
    high power density TEGs based on Mg2Sn-GeTe for the first time, simultaneously
    delivering a remarkable conversion efficiency of 9% under a temperature gradient
    of 418 K, thereby setting a new benchmark in the field. This exceptional performance
    is attributed to the significant balance between the moderating carrier and phono
    transport in Mg2Sn, enabled by a stepwise aliovalent Sb and Bi solid solution,
    without over-compromising its outstanding power factor. Consequently, a high thermoelectric
    figure of merit of 1.4 is achieved in Mg2Sn0.8(Sb0.5Bi0.5)0.2. The high-performance
    Mg2Sn–GeTe TEGs introduced here represent a significant advancement in thermoelectric
    technology, offering an innovative and efficient solution for off-grid energy
    supply in waste-heat-rich environments.
  description_type: abstract
  lang: und

## Creator

- name: Xinzhi Wu
  role: author
  organization: National Institute for Materials Science
- name: Longquan Wang
  role: author
  orcid: https://orcid.org/0009-0009-9910-9770
  organization: National Institute for Materials Science
- name: Airan Li
  role: author
  orcid: https://orcid.org/0009-0004-7318-4821
  organization: National Institute for Materials Science
- name: Gang Wu
  role: author
  organization: National Institute for Materials Science
- name: Zhao Hu
  role: author
  orcid: https://orcid.org/0000-0003-4252-6572
  organization: National Institute for Materials Science
- name: Fei Frank Yun
  role: author
  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: Wiley

## Managing organization



## Keyword

- subject: thermoelectric
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Science
  issn: '21983844'
  volume: '12'
  issue: '40'
  article_number: e06997

## Conference



## Related item



## Funding



## 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: a1753563-2dff-4fa2-aa7f-5ba249bbc0de
  filename: Advanced Science--High Conversion Efficiency in Intrinsic High Power‐Density
    Mg2Sn‐GeTe Thermoelectric.pdf
  content_type: application/pdf
  size: 3948565
  md5: 66d0bf4b9ee6efabb9e0bf3d7b15a198

## Thumbnail

fileset_id: a1753563-2dff-4fa2-aa7f-5ba249bbc0de
filename: Advanced Science--High Conversion Efficiency in Intrinsic High Power‐Density
  Mg2Sn‐GeTe Thermoelectric.pdf