A novel cathode material La0.5Sr0.5Bi0.2Co0.6Fe0.2O3–δ fabrication for intermediate temperature solid oxide fuel cells

A novel cathode material La0.5Sr0.5Bi0.2Co0.6Fe0.2O3–δ ceramic was synthesized via an inexpensive flash pyrolysis method and then conventional sintering. The phase and microstructure of La0.5Sr0.5Bi0.2Co0.6Fe0.2O3–δ ceramic were investigated using X-ray diffraction and scanning electron microscopy....

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Bibliographic Details
Main Authors: Singh, Sunder, Kumar, Anil, Saini, Deepash Shekhar
Format: Conference Proceeding
Language:English
Subjects:
Cathodes
Crystal structure
Diffraction patterns
Electrode materials
Fracture surfaces
Grain size
Parameter estimation
Photomicrographs
Pyrolysis
Sintering (powder metallurgy)
Solid oxide fuel cells
Unit cell
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Summary:A novel cathode material La0.5Sr0.5Bi0.2Co0.6Fe0.2O3–δ ceramic was synthesized via an inexpensive flash pyrolysis method and then conventional sintering. The phase and microstructure of La0.5Sr0.5Bi0.2Co0.6Fe0.2O3–δ ceramic were investigated using X-ray diffraction and scanning electron microscopy. The Rietveld refinement program is used to estimate the bond length, unit cell parameters, and crystal structure. The XRD pattern revealed a pure single phase with rhombohedral structure and R3̄c space group symmetry in the sample sintered at 700 °C. FESEM micrographs of the sample sintered at 700 °C showed a notable porosity and nano grain size (50-100 nm) on the fracture surface.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0224601