Energy dispersive X-ray spectroscopy (EDS) mapping of nickel oxide yttria-stabilized zirconia (NiO-YSZ) was carried out after various hydrogen reducing and methane steam reforming conditions. Nickel aggregation was visualized after methane steam reforming by correlating Ni Ka map with scanning transmission electron microscopy (STEM) images. From the reduced O Ka intensities in the Ni Ka dominated regions after methane steam reforming, NiO reduction in to Ni can be interpreted. From correlation between Zr Ka and O Ka maps, high stability of YSZ was also realized. Examples of NiO-YSZ overlapped particles are considered to discuss chemical imaging of a single particle.
Revised: November 8, 2011 |
Published: July 20, 2011
Citation
Saraf L.V. 2011.Imaging Chemical Aggregation of Ni/NiO Particles from Reduced NiO-YSZ.Electrochemical and Solid-State Letters 14, no. 10:B100-B104.PNNL-SA-80890.doi:10.1149/1.3610426