Publications Repository - Gdańsk University of Technology

Ba0.5La0.5Co0.5Fe0.5O3 was synthesized in the solid-state reaction route. The influence of ball milling parameters (such as milling media size, angular velocity, and time), pelletizing pressure, and annealing parameters on the microstructure was studied. The grain size distribution and density or specific surface area changes were investigated in each approach while the individual parameters were changed. The evaluation of BLCF synthesis parameters enables tailoring the microstructure to various applications. It was observed that with lowering the size of milling balls and increasing the angular velocity the material will be porous and thus more appropriate as electrode material in proton ceramic fuel cell or electrolyzer. An increase of time, balls diameter, and/or angular velocity of milling enables one to densify the material in case of membrane application in, e.g., as a gas sensor. The significant influence on densification has also annealing temperature increase. Applying 1200 C during annealing leads to dense material, while at 1100 C shows visible porosity of the product. In this work, we present the results of the BLCF synthesis parameters change allowing the selection of appropriate parameter values depending on the further application as PCCs.

Authors

• Daria Gierszewska link open in new tab ,
• dr inż. Iga Szpunar link open in new tab ,
• Francis Oseko link open in new tab ,
• Joanna Pośpiech link open in new tab ,
• Małgorzata Nadolska link open in new tab ,
• Martyna Pieragowska link open in new tab ,
• Karolina Reniecka link open in new tab ,
• Kinga Waniek link open in new tab ,
• Karol Leszczyński link open in new tab ,
• dr hab. inż. Aleksandra Mielewczyk-Gryń link open in new tab ,
• prof. dr hab. inż. Maria Gazda link open in new tab ,
• dr inż. Sebastian Wachowski link open in new tab