Diffraction Investigation of the Oxygen Storage Capacity of pure and Gd doped Cerium oxides functional materials under reducing conditions b

The aim of the experiment is to perform a of X-ray Diffraction investigation on Ce1-xGdxO2-d solid solutions (x=0, 0.125, 0.25, 0.50, 0.75, 1.00), to contribute to the comprehension of the oxygen vacancy concentration and distribution in pure and Gd doped Ceria functional materials under reducing conditions, i.e. in operating conditions when adopted as a solid electrolyte in solid oxide fuel cells. Samples will be measured in an in-situ cell upon reducing (He/CO 5%) and oxidizing condtions (He/O2 20%) at different temperature raging from RT to 1073 KThis will allow gaining direct observation of the impact of the Gd dopant in the ceria and in its Oxygen Storage Capacity and on the architecture of the oxygen vacancies.