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

10th Curtin University Technology Science and Engineering International Conference

自然科学;工业技术

Karim, A.H.^1 ; Afif, A.^1 ; Begum, F.^1 ; Petra, P.I.^1 ; Azad, A.K.^1

Faculty of Integrated Technology, Universiti Brunei Darussalam, Gadong, Negara

B.E 1410, Brunei^1

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

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/121/1/012015/pdf
DOI  :  10.1088/1757-899X/121/1/012015

来源: IOP

【 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.