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Related Concept Videos

Maxwell's Thermodynamic Relations01:23

Maxwell's Thermodynamic Relations

Maxwell's thermodynamic relations are very useful in solving problems in thermodynamics. Each of Maxwell's relations relates a partial differential between quantities that can be hard to measure experimentally to a partial differential between quantities that can be easily measured. These relations are a set of equations derivable from the symmetry of the second derivatives and the thermodynamic potentials.
All thermodynamic potentials are exact differentials. Therefore, their second-order...

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Advances in Magnesium-Based Thermoelectrics: A Critical Review.

Li-Min Zhang1, Li Zhang1, Nan-Hai Li2

  • 1School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|June 4, 2026
PubMed
Summary

Magnesium-based thermoelectric materials offer abundant, low-cost, and eco-friendly options for efficient energy conversion. This review highlights advances in Mg3X2, MgAgSb, and Mg2X materials, focusing on optimization and future device-system co-design for practical applications.

Keywords:
applicationdevicemagnesiummaterialsthermoelectric

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Area of Science:

  • Materials Science
  • Solid State Physics
  • Energy Conversion

Background:

  • Magnesium-based thermoelectric materials are gaining traction for large-scale applications due to their abundance, low cost, and environmental friendliness.
  • These materials exhibit competitive thermoelectric performance, particularly in the low-to-mid temperature range.
  • Recent rapid progress necessitates a systematic review of the field.

Purpose of the Study:

  • To systematically review the latest advances in three key classes of magnesium-based thermoelectric materials: Mg3X2 (X = Sb, Bi), MgAgSb, and Mg2X (X = Si, Ge, Sn).
  • To analyze crystal structures, electronic band features, phonon transport, and carrier scattering mechanisms.
  • To discuss fabrication strategies, performance optimization, challenges, and future directions for practical deployment.

Main Methods:

  • Review of recent literature on magnesium-based thermoelectric materials.
  • Analysis of crystal structures, electronic properties, and thermal transport.
  • Evaluation of fabrication techniques (bulk and thin-film) and their impact on performance.
  • Assessment of optimization strategies including carrier concentration tuning, band engineering, and microstructural/interface design.
  • Critical examination of stability and device integration challenges.

Main Results:

  • Detailed survey of Mg3X2, MgAgSb, and Mg2X materials, covering their fundamental properties and thermoelectric performance.
  • Identification of common and distinct strategies for optimizing thermoelectric performance.
  • Assessment of challenges in chemical/thermal stability and device integration.
  • Review of device-level design principles for practical implementation.

Conclusions:

  • Magnesium-based thermoelectric materials show significant promise for widespread use.
  • Performance optimization requires a holistic approach considering material properties, fabrication, and device integration.
  • A paradigm shift towards material-device-system co-design is crucial for accelerating the practical deployment of these materials.