Interface Engineering Boosting High Power Density and Conversion Efficiency in Mg2Sn0.75Ge0.25‐Based Thermoelectric Devices

X Wu, Y Lin, C Liu, Z Han, H Li, Y Wang… - Advanced Energy …, 2023 - Wiley Online Library
Electrode contact interfaces for practical thermoelectric (TE) devices require high bonding
strength, low specific contact resistivity, and superb stability. Herein, the state‐of‐the‐art …

High-performance tellurium-free thermoelectric module for moderate temperatures using α-MgAgSb/Mg2 (Si, Sn)

A Wieder, J Camut, A Duparchy, R Deshpande… - Materials Today …, 2023 - Elsevier
Abstract α-MgAgSb is a promising thermoelectric material with an average figure of merit
above unity between room temperature and 573 K, making it attractive for low temperature …

Establishing synthesis–composition–property relationships for enhanced and reproducible thermoelectric properties of MgAgSb

A Duparchy, L Millerand, J Camut… - Journal of Materials …, 2022 - pubs.rsc.org
α-MgAgSb is a promising p-type thermoelectric (TE) with excellent performance from room
temperature up to 300° C with a figure of merit of zTmax= 1.3. This makes MgAgSb a …

Analyzing the Performance of Thermoelectric Generators with Inhomogeneous Legs: Coupled Material–Device Modelling for Mg2X-Based TEG Prototypes

J Camut, E Müller, J de Boor - Energies, 2023 - mdpi.com
Thermoelectric generators (TEGs) possess the ability to generate electrical power from heat.
As TEGs are operated under a thermal gradient, inhomogeneous material properties—either …

Overcoming Asymmetric Contact Resistances in Al-Contacted Mg2(Si,Sn) Thermoelectric Legs

J Camut, S Ayachi, G Castillo-Hernández, S Park… - Materials, 2021 - mdpi.com
Thermoelectric generators are a reliable and environmentally friendly source of electrical
energy. A crucial step for their development is the maximization of their efficiency. The …

[HTML][HTML] Towards energy filtering in Mg2X-based composites: Investigating local carrier concentration and band alignment via SEM/EDX and transient Seebeck …

S Ghosh, H Naithani, B Ryu, G Oppitz, E Müller… - Materials Today …, 2023 - Elsevier
A comprehensive understanding of multi-phase materials requires the characterization of
transport properties at the micro/nano-scale. Optimized alignments of the conduction bands …

Make contact with silver

J de Boor - Nature Energy, 2023 - nature.com
Contact design is a major challenge in the development of thermoelectric devices. New
research shows that silver nanoparticles soldered at low temperature can sustain high …

High‐Performance Thermoelectric Devices Made Faster: Interface Design from First Principles Calculations

S Ayachi, S Park, B Ryu, SD Park… - Advanced Physics …, 2024 - Wiley Online Library
The enormous progress achieved with high‐performance thermoelectric materials has yet to
be implemented in high‐performance devices. The bottleneck for this is the material‐specific …

Surface Degradation of Mg2X-Based Composites at Room Temperature: Assessing Grain Boundary and Bulk Diffusion Using Atomic Force Microscopy and Scanning …

S Ghosh, M Abdelbaky, W Mertin… - … Applied Materials & …, 2024 - ACS Publications
Practical application of thermoelectric generators necessitates materials that combine high
heat-to-electricity conversion efficiency with long-term functional stability under operation …

Effect of Mg deficiency on the thermoelectric properties of Mg2 (Si, Sn) solid solutions

S Byeon, B Wiendlocha, J de Boor, K Nielsch… - Journal of Alloys and …, 2023 - Elsevier
In this study, we analyze the change in the thermoelectric properties of a Mg x (Si, Sn)
system upon varying nominal Mg content x (x= 1.8, 1.9, 2.1, 2.2, 2.3). We find that Mg …