期刊
MATERIALS CHARACTERIZATION
卷 60, 期 2, 页码 138-143出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2008.08.002
关键词
Ceramics; Gadolinia-doped ceria; Photoelectron spectroscopy
Gadolinia-doped ceria (CGO) is an important material to be used as electrolyte for solid oxide fuel cell for intermediate temperature operation. Ceria doped with 10 mol% gadolinia (Ce0.9Gd0.1O1.95) was prepared by conventional solid state synthesis and found to be single phase by room temperature X-ray diffraction (XRD). The chemical states of the surface of the prepared sample were analyzed by X-ray photoelectron spectroscopy (XPS). Though Gd was present in its characteristic chemical state, Ce was found in both Ce4+ and Ce3+ states. Presence of Ce 3, state was ascribed to the differential yield of oxygen atoms in the sputtering process. (c) 2008 Elsevier Inc. All rights reserved.
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