Title of the project: New Concepts for Solid Oxide Cells
Supervisors and Host Institution: Dr. Albert Tarancon and Dr. Marc Torrell at the Catalonia Energy Research Institute (IREC)
The thesis project is focused on fabrication of an innovative and complex structure for YSZ electrodes with dense and porous parts and optimize the fabrication parameters for the stereolithography 3D-printing process to obtain enhanced features of the ceramic supports that will be applied for SOC. Aiming on optimize the 3D processing of combined porous and dense structures for SOFC/SOECs as well as complex shapes for SOFC, dense (δ>95%) monolithic gas-tight YSZ electrolyte with defined porosity patterns on both sides will be fabricated for later functionalization by infiltration of the electrodes. In adittion, in the interest to decrease the operation temperature, and as alternative to the more conventional materials (avoiding the use of CGO barrier layer on complex surfaces) the thesis proposes the use of different perovskite electrode materials based on the exsolution of catalytically active dopants by the solid precipitation of the functional active elements such as: Ni on the Ni doped Sr0.94Y0.04TiO3 perovskite (Ni-YSTO) as anode materials and Ag doped La0.6Sr0.2MnO3 (Ag-LSM) to lower the cathode operation temperatures.
Maritta Lira received her bachelor´s and master’s degree at Universidade Federal do Rio Grande do Norte (Brazil). During the bachelor, she worked with tugstates in a lab of nanomaterials for catalytic reactions. In that time, she received a grant to study Chemical Engineering a year and a half at University of Hull (England), where she could work with magnetic inks. During her master she focused in nanomaterials for catalysis and developed a process to obtain a nanocatalyst (molybdenum carbide) from a raw mineral (molybdenum sulfide). After graduation, she decided to continue the research of the materials for renewable energy applications. Currently, she is a PhD student at the Catalonia Institute for Energy Research (IREC). Passionate about renewable energy sector her objective in a long-term view is to become a consolidated researcher in this field, especially in the new trends of materials applied for catalysis.