Materials Science-Poland · 2016 · 15 citations · 18 references
Natural SciencesMaterials EngineeringMaterials ScienceEnergy MaterialsMaterials ChemistryNanomaterialsElectrode MaterialsFuel Cell MaterialsInorganic MaterialsMetal Oxide NanomaterialsMetal OxidesNanocompositesActivation EnergyFuel Cell NanomaterialsNanostructured Fuel Cell MaterialsNickel Oxide NanomaterialsOxide Ceramic CompositesSolid Oxide Fuel Cell MaterialsSolid Oxide Fuel CellsThermochemistry Of Oxides
Abstract NiO–Al 2 O 3 nanocomposite has been synthesized by mixing combustion synthesized powders. The nanocomposite is an effective anode/anode functional layer for intermediate temperature solid oxide fuel cells. The TEM of NiO and Al 2 O 3 revealed spherical particles of 30 nm and platelets of 70 nm, respectively. The XRD analysis of NiO–Al 2 O 3 composite sintered at 900 °C showed presence of cubic NiO and rhombohedral α-Al 2 O 3 which were chemically stable. However, above 1200 °C NiAl 2 O 4 started to appear. The conductivity of NiO–Al 2 O 3 was the highest in hydrogen (4.3 × 10 –3 S/cm at 600 °C). In biogas, the conductivity was 3.2 × 10 –3 S/cm with the activation energy of 0.67 eV. The stability of the composite in biogas was also examined.
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Stable carbon dioxide reforming of methane over modified Ni/Al2O3 catalysts
Jae Sung Choi, Young Gul Kim, Jae Sung Lee et al. · Catalysis Letters · 1998 · 123 citations