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Carbothermal reduction of the YSZ–NiO solid oxide fuel cell anode precursor by carbon-based materials

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Abstract

The thermal behavior of the yttria-stabilized zirconia (YSZ) and nickel oxide (YSZ–NiO) composite mixtures with the addition of graphite, multiwall carbon nanotubes and functionalized multiwall carbon nanotubes was studied. The YSZ–NiO composite is the precursor of the YSZ–Ni anode of solid oxide fuel cells. The anode exhibits a porous structure, which is usually obtained by the addition of carbon containing pore formers. Thermal analysis and X-ray diffraction evidenced that the properties of carbonaceous materials (C) and atmosphere have a strong influence on the thermal evolution of the reactions taking place upon heating the anode precursor. The dependence of both the carbon content and the chemical nature of the ceramic matrix on the thermal behavior of the composite were investigated. The discussed results evidenced important features for optimized processing of the anode.

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Acknowledgements

Authors are thankful to CNEN, CNPq (554970/2006-6, 555173/2005-4), and FINEP. Carbon nanotubes were produced at the Laboratório de Nanomaterias in the Physics Department of UFMG.

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Authors and Affiliations

  1. CCCH—IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, São Paulo, SP, Brazil

    E. Arico, F. Tabuti & F. C. Fonseca

  2. CECS—UFABC, R. Santa Adélia 166, Santo André, SP, Brazil

    F. Tabuti & D. Z. de Florio

  3. Departamento de Física, UFMG, Belo Horizonte, MG, Brazil

    A. S. Ferlauto

Authors
  1. E. Arico
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  2. F. Tabuti
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  3. F. C. Fonseca
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  4. D. Z. de Florio
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  5. A. S. Ferlauto
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Correspondence to E. Arico.

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Arico, E., Tabuti, F., Fonseca, F.C. et al. Carbothermal reduction of the YSZ–NiO solid oxide fuel cell anode precursor by carbon-based materials. J Therm Anal Calorim 97, 157–161 (2009). https://doi.org/10.1007/s10973-009-0248-4

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  • DOI: https://doi.org/10.1007/s10973-009-0248-4

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