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Characteristics of lanthanum silicates electrolyte for solid oxide fuel cells
- Authors
- Lee, D.-J.; Lee, S.-G.; Noh, H.-J.; Jo, Y.-W.
- Issue Date
- 2015
- Publisher
- Korean Institute of Electrical and Electronic Material Engineers
- Keywords
- La9.33(Si5V1)O26; Lanthanum silicate; Mixed-oxide method; SOFC
- Citation
- Transactions on Electrical and Electronic Materials, v.16, no.4, pp 194 - 197
- Pages
- 4
- Indexed
- SCOPUS
KCI
- Journal Title
- Transactions on Electrical and Electronic Materials
- Volume
- 16
- Number
- 4
- Start Page
- 194
- End Page
- 197
- ISSN
- 1229-7607
2092-7592
- Abstract
- La9.33 (Si5 V1)O26 ceramics were fabricated by the mixed oxide method for solid oxide electrolytes. La9.33 (Si5 V1)O26 specimens showed the hexagonal, space group P63 or P63/m, and the unit cell volume increased when the sintering temperature increased. The specimen sintered at 1,400˚C showed the X-ray patterns of the homogeneous apatite single phase without the second phase, such as La2 SiO5 and SiO2. The specimen sintered at 1,400˚C showed the maximum sintered density of 4.93 g/cm3. When the sintering temperature increased, the electrical conductivities increased, the activation energy decreased and the values were 7.83×10-4 S/cm, 1.61 eV at 600˚C, respectively. ?2015, KIEEME. All rights reserved.
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