Iurii Kogut

BMFTR research project. • Electro-chemo-mechanical modelling of solid oxide electrolysis cells. Electrochemical characterization (Impedance spectroscopy, DRT analysis, ECM modeling). Development of comprehensive 3-dimensional finite elements model (Comsol Multiphysics) for simulation of electro-chemo-mechanical relationships and their impact on performance and degradation of ceria-based SOEC to enable model-based optimization of SOEC designs for their extended durability under typical operation conditions.

DFG research projects: • Electromechanical properties and atomistic transport in aluminum nitride single crystals at high temperatures • In-situ methods for the determination of high oxygen deficits in cerium-zirconium mixed oxides (CZO) for use in exhaust gas aftertreatment

Doctoral and post-doctoral research focusing on electrophysical properties of Si and SiGe micro- and nanowires at cryogenic temperatures, under strong magnetic fields and mechanical strains for creation of sensors and energy converters utilizing thermoelectric, piezoresistive and magnetoresistive effects. Development of thermoelectric converters on the basis of nanostructured Si and SiGe.

• Development of high efficiency nanostructured thermoelectric generators for industrial waste heat recovery: (1) synthesis of thermoelectric bismuth telluride nanopowders by ball milling and/or self-propagating high-temperature synthesis; (2) fabrication of bulk thermoelectric composites by rapid current-assisted hot-press sintering; (3) characterization of developed materials (thermoelectric properties, thermal conductivity (LFA), XRD, SEM-EDX, DSC, etc.)

Development of nanostructured thermoelectric skutterudites and metal composite electrodes as well as technological aspects of novel thermoelectric generators with enhanced power density. Conventional and unconventional rapid synthesis techniques. Nanostructuring by either ball milling or melt spinning, followed by spark plasma sintering. Microstructural studies (XRD, SEM, EDX), and comprehensive investigation of thermoelectric properties.

R&D project "Replacement of Bi2Te3 for thermoelectric conversion at low temperatures: a feasibility study." Fabrication and characterization of thermoelectric magnesium silicide nanofilms: - Deposition by RF magnetron sputtering - Study of formation of magnesium silicide phase by reactive diffusion upon thermal treatment - Structural characterization of Mg2Si by XRD and SEM-EDX

PhD thesis: Thermoelectric and magnetic properties of SiGe whiskers for application in sensors of thermal quantities