| Autor: |
De, Daniel Z., Tabuti, Francisco N., Fonseca, Fabio C., Muccillo, Reginaldo |
| Zdroj: |
ECS Transactions; September 2009, Vol. 25 Issue: 2 p1079-1084, 6p |
| Abstrakt: |
The solid oxide fuel cell (SOFC) has attracted a great deal of attention due to its high efficiency and variety of usable fuels like hydrocarbon or alcohols. In this work, aiming at the use of carbon-containing fuels in SOFC, ZnO was added to the SOFC anode ceramic-metal composite yttria-stabilized zirconia/nickel (YSZ/Ni) in a wide range of relative compositions. Apparent density measurements confirmed that ZnO is a sintering aid for YSZ matrix. X-ray diffraction revealed the presence of YSZ, Ni, ZnO and NiO phases in all samples. The impedance analysis show that the higher is the ZnO concentration, until 50% vol., lower is the electrical resistance of the samples. The single cells preliminary experiments suggest the higher efficiency of ethanol fuelled SOFCs with YSZ/Ni/ZnO anode. Further experiments using doped-ceria instead of YSZ will be accomplished to enhance the SOFC performance at temperatures as low as 500 {degree sign}C. |
| Databáze: |
Supplemental Index |
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