Effect of annealing on crystal structure of SOFC electrolyte materials by in-situ neutron diffraction

Ito, Takanori*; Hirai, Takene*; Wang, Z.*; Mori, Masashi*; Igawa, Naoki   

We investigate the effect of annealing on the crystal structure of the solid oxide fuel cell electrolyte by neutron diffraction study with the Rietveld/maximum entropy method analyses. We observed the high nuclear scattering length density distribution of oxygen on the (400) plane of as sintered scandium and cerium oxide doped zirconia measured at 700 K. It was founded that those spread region became lower by the annealing at 600C for 1000h.