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Journal of the Chilean Chemical Society

versão On-line ISSN 0717-9707

Resumo

CHENG, JIHAI. SYNTHESIS OF LAxSR1-xTIO3 ANODE MATERIALS BY SOL-GEL AUTO-COMBUSTION METHOD. J. Chil. Chem. Soc. [online]. 2012, vol.57, n.1, pp.969-971. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072012000100003.

A novel anode material for intermediate temperature solid oxide fuel cells with a composite of LaxSR1-xTiO3 has been synthesized by a sol-gel auto-combustion method. X-ray diffraction (XRD) shows that LaxSR1-xTiO3 has good chemical compatibility with Gd0.2 Ce0.8O1.9 electrolyte. The thermal expansion coefficient (TEC) of the as-prepared anode material is similar to that of Gd0.2 Ce0.8O1.9. The electric conductivity measurements show that the conductivity of LaxSR1-xTiO3 increases with the increasing of lanthanum contents and reached a maximal value at x=0.3. At 800oC, the electrical conductivity of La0.3Sr0.7TiO3 is 184Scm-1.

Palavras-chave : Fuel cells; Electrode materials; Chemical synthesis; X-ray diffraction.

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