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Title [sv]
Design av nanokompositer som innehåller magnetiska nanopartiklar i övergångsmetallnitrider för förbättrade termoelektriska egenskaper
Title [en]
Design of Nanocomposites Incorporating Magnetic Nanoparticles in Transition Metal Nitrides for Enhanced Thermoelectric Properties
Abstract [sv]
To meet the growing demand for renewable energy for a sustainable future, thermoelectricity can be a potential contributor. This is based on the conversion of heat losses into electricity, which can conceivably have a major impact on wearable electronics where human heat is the energy source or on heat losses in buildings. To succeed, continued efforts are needed to improve the thermoelectric properties of existing thermoelectric materials to make them relevant for applications. A major breakthrough for thermoelectric materials is predicted in nanostructured materials or by using the concept of "nanoparticles in alloys". However, the further development of thermoelectric materials depends on the challenges in the synthesis of bulk materials for these nanostructured materials. These challenges can be overcome using unique and unconventional methods for thin film synthesis, as proposed in this proposal.The present application aims to improve the thermoelectric properties of Transition Metal Nitride materials containing embedded magnetic nanoparticles. This unexplored approach to improving thermoelectric properties is based on better control of the electrical and thermal properties of the materials, which improves their ability to generate electrical energy. The project is driven by synergy and mutual input between experiment and theory is the key to the successful implementation of the project. This will form the basis for developing and understanding new physical properties of unexplored nanoparticle-based composite coatings and more specifically for the development of thermoelectricity.
Abstract [en]
In addressing the escalating need for renewable energy waste heat use, thermoelectricity can be a tangible technology is a promising solution, however improving existing materials is essential for practical applications. One pivotal aspect lies in the design of materials through nanostructuring and the use of nanocomposite materials, integrating magnetic nanoparticles within a semiconductor matrix. Conventional synthesis methods are constrained by thermodynamic considerations, limiting the range and diversity of fully inorganic nanocomposite material systems. The proposed synthesis enables the creation of new nanostructured materials, facilitating the exploration of novel electrical and thermal conductivity phenomena in semiconductor materials.Incorporating magnetic nanoparticles into a thermoelectric material represents a strategic approach to enhancing multiple thermoelectric characteristics simultaneously. The project will, primarily, explore the experimental and theoretical implications of embedding Fe nanoparticles into paramagnetic CrN coatings. By synergizing experimental findings with theoretical insights, the objective is to attain exceptional thermoelectric properties through innovative concepts that can be extrapolated to other thermoelectric materials. While the primary focus is on achieving tangible benefits in harnessing environmentally friendly heat sources, broader impact lies in synthesis methodology to provide diverse material applications and properties. 
Alling, Björn
Principal InvestigatorFebvrier, Arnaud
Coordinating organisation
Uppsala University
Funder
Period
2026-01-01 － 2029-12-31
National Category
Materials Chemistry
Identifiers
DiVA, id: project:9823Project, id: 2025-03760_VR

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