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Information × Registration Number 0225U001807, (0122U000414) , R & D reports Title Increasing the electrical conductivity of the fuel cell zirconia electrolyte by improvingits dopant composition popup.stage_title Підвищення електричної провідності цирконієво-кермічного електроліту паливної комірки через вдосконалення складу його стабілізаторів. Head Brodnikovskyi Yehor M., Кандидат технічних наук Registration Date 08-02-2025 Organization Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine popup.description1 Development of solid oxide fuel cell (SOFC) electrolyte materials with higher electrical conductivity in comparison with the traditional 8YSZ (stabilized zirconia with 8-mol. % yttrium dioxide) one, which currently is widely used for production of energy generating systems. The regularities of structure formation of SOFC zirconia-based electrolyte depending on the composition of the stabilizing additives (Sc2O3, Y2O3, Sm2O3, Eu2O3, Yb2O3) would be determined. The influence of the electrolyte structure on the mechanical behavior and electrical properties will be studied. Identifying the structure-properties relation ship for the developed electrolyte materials will help to find out its optimal composition and manufacture route, which provides the properties required. popup.description2 The research work was aimed to obtain new knowledge on the structure formation and properties of zirconia ceramics with various stabilizing dopants and their combinations; formulation the principles for controlling the structure and properties of the solid oxide fuel cell (SOFC) zirconia electrolytes through the nature/amount/combination of stabilizing dopants. Development of the SOFC electrolyte materials with higher electrical conductivity compared to the 8 mol % yttrium oxide (8YSZ) electrolyte, which is currently the traditional and most popular electrolyte material for commercial production of SOFCs and the combined heat and power systems based on them. In this work, zirconia powders stabilized with 10 mol.% Ytterbia (10YbSZ); 10 mol.% and 15 mol.% Europia (10EuSZ), 10 mol.% Gadolinia (10GdSZ), 10 mol.% Samaria (10SmSZ), powder of the traditional electrolyte material 8YSZ (zirconia stabilized with 8 mol.% Yttria) and zirconia powder co-stabilized with 2 mol.% Europia oxide, 3 mol.% Scandia, 3 mol.% Ytterbia and 3 mol.% Yttria (2Eu3Sc3Yb3YSZ) were synthesized. The samples of ceramic electrolytes for fuel cells were made from the synthesized powders. The structure, phase composition and electrical properties in the temperature range of 600-800 ℃ were investigated. Computer modeling and analysis of the probability of formation of mixed defects (Sc3+- oxygen vacancy - Y3+) were performed and their impact on the degradation of the ionic conductivity of the electrolyte material based on cubic zirconia with joint stabilization by yttria and scandia was assessed. Product Description popup.authors Brychevskyi Mykola M. Brodnikovskyi Yehor M. Brodnikovskyi Dmytro M. Vasilev Oleksandr O. Vasylev Oleksandr D. Holovkova Maryna Ye, Gorda Ruslana V, Dorogoi Oleksandr A. Kolotylo Maksym O. Lysunenko Natalia O. Polishko Igor O. Kharchenko Sergii A. Shkolnyi Valentyn K/ popup.nrat_date 2025-02-08 Close