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Conductivity and Microstructure of Li Doped Thick Film Ceria Electrolyte
- Authors
- Lee, Seung-Hwan; Kim, Hong-Ki; Choi, Hyeong Jong; Kim, Jin Hyeon; Yoon, Jung-Rag; Lee, Sung-Gap; Lee, Young-Hie
- Issue Date
- Oct-2016
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Ceramics; Impedance Spectroscopy; X-ray Diffraction; Electrical Properties; Ionic Conductivity
- Citation
- Science of Advanced Materials, v.8, no.10, pp 1919 - 1922
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- Science of Advanced Materials
- Volume
- 8
- Number
- 10
- Start Page
- 1919
- End Page
- 1922
- ISSN
- 1947-2935
1947-2943
- Abstract
- Effects of Li doping on the electrical properties were investigated. The Ce-0.75(Gd0.95-xLixCa0.05) O-0.25(2-delta) (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05 mol%) thick films were sintered at 1400 degrees C for 8 h. X-ray diffraction (XRD) showed typical XRD patterns of a cubic fluorite structure and ionic conductivity was examined by AC impedance spectroscopy. From the experimental results, it was observed that the composition Ce-0.75(Gd0.95-xLixCa0.05)(0.25)O2-delta (x = 0.04 mol%) thick film electrolytes had higher conductivity and minimum activation energy at 600 degrees C and this can be explained by the increase in the oxygen vacancy concentration in the grain boundary.
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Collections - 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
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