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Interstitial Oxide Ion Order and Conductivity in La1.64Ca0.36Ga3O7.32 Melilite
- Source :
- Angewandte Chemie, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Angewandte Chemie (International Ed. in English)
- Publication Year :
- 2010
- Publisher :
- Wiley, 2010.
-
Abstract
- Solid oxide fuel cells (SOFCs) are a major candidate technology for clean energy conversion because of their high efficiency and fuel flexibility.1 The development of intermediate-temperature (500–750 °C) SOFCs requires electrolytes with high oxide ion conductivity (exceeding 10−2 S cm−1 assuming an electrolyte thickness of 15 μm1). This conductivity, in turn, necessitates enhanced understanding of the mechanisms of oxide ion charge carrier creation and mobility at an atomic level. The charge carriers are most commonly oxygen vacancies in fluorites2, 3 and perovskites.3, 4 There are fewer examples of interstitial-oxygen-based conductors such as the apatites5, 6 and La2Mo2O9-based materials,7–9 so information on how these excess anion defects are accommodated and the factors controlling their mobility is important.
- Subjects :
- Oxide
chemistry.chemical_element
Nanotechnology
defect structures
02 engineering and technology
Electrolyte
Conductivity
engineering.material
010402 general chemistry
01 natural sciences
7. Clean energy
Oxygen
Catalysis
Ion
chemistry.chemical_compound
calcium lanthanum gallate melilite interstitial oxide ion order cond
QD
Electrical conductor
oxido ligands
Chemistry
Melilite
General Medicine
General Chemistry
021001 nanoscience & nanotechnology
Communications
0104 chemical sciences
Chemical engineering
solid-state structures
engineering
Charge carrier
ion conductivity
0210 nano-technology
Subjects
Details
- ISSN :
- 14337851
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- Angewandte Chemie International Edition
- Accession number :
- edsair.doi.dedup.....19d66234ab9f80c00757cbaaebd9b941