Synthesis and characterization of La0.75Sr0.25Mn0.5Cr0.2Ti0.3O3 Anodes for SOFCs

[摘要] La0.75Sr0.25Mn0.5Cr0.2Ti0.3O3has been synthesized in solid state reaction method and tested as a potential anode material for solid oxide fuel cells. Rietveld refinement of X-ray powder diffraction data of the composition using Fullprof software shows that the materials crystallize in the rhombohedral symmetry in the R-3C space group. The cell parameters are: a = b = 5.5143 (4) Å, c = 13.452(1) Å, α = β = 90°, δ = 120°. Addition of titanium to the B-site of La0.75Sr0.25Mn0.5Cr0.2Ti0.3O3-δyields a total conductivity of 1.96 Scm-1in air at 800 °C with activation energy of 1.02 eV.

[发布机构] Faculty of Integrated Technology, Universiti Brunei Darussalam, Gadong, Negara; B.E 1410, Brunei^1

[效力级别] 工业技术

[关键词] Anode material;C-space;Cell parameter;Rhombohedral symmetry;Solid state reaction method;Synthesis and characterizations;X-ray powder