Influence of sintering conditions on microstructure and oxygen permeation of Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) oxygen transport membranes

Effects of H2O and CO2on Electrochemical Behaviors of BSCF Cathode for Proton Conducting IT-SOFC

“…Relatively large particle size of ∼1-3 μm for the BSCF electrode was observed, which may be attributed to the high surface energy of BSCF and the strong tendency to coarsen. 23,34,35 The porosity of the BSCF electrode was estimated to be ∼22% based on the analysis of SEM image using the software of ImageJ (version 1.50i). Effect of moisture on BSCF cathode electrochemical behavior.-Figs.…”

Microwave Assisted Synthesis and Sintering of Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite

“…In this application, an oxygen partial pressure gradient between the membrane sides acts as the driving force for the oxygen transport across the membrane. The oxygen permeation process through these membranes involves oxygen exchange on the membrane surfaces and migration of oxygen anions through the crystal lattice via oxygen vacancies until to reach the opposite side and the exchange reverse process occurs [1][2][3][4][5] . In particular, the BSCF perovskite is known by its high oxygen diffusivity and extremely low surface resistance to oxygen reduction, and incorporation into crystal lattice 1,2,[6][7][8] .…”

“…Thereby, this architecture development suggests the using of starting powders with nanometer particles size and high specific surface area 4,[8][9][10][11] . Consequently, BSCF powders synthesis has become a subject of great relevance and the BSCF perovskite has been synthesized by several methods: conventionally by solid state reaction 12,13 , combustion synthesis reaction 14,15 , co-precipitation method 8,16 , complexing method 5,11,12 , and others 17 . Moreover, the use of microwave heating together with these synthesis methods has emerged as a novel route to produce materials in nanoscale 17 .…”

Current developments of mixed conducting membranes on porous substrates

“…Carbon capture and storage (CCS) is an approach to relieve global warming by capturing CO 2 and storing it instead of releasing it into the atmosphere [1][2][3][4] . Different fossil fuel power plant concepts for CCS are currently being developed, such as oxyfuel power plants.…”

“…The perovskite structure exhibits good ionic and electronic conductivity leading to attractive oxygen flux 7 . In the last decade, intensive research has been dedicated to the preparation and characterization of MIEC membranes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] . However, a few reports can be found regarding to the preparation of crack-free membranes (with thicknesses less than 25 µm) for planar or tubular geometries.…”