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Abstract
BaCeO3-based proton conductor BaCe0.5Zr 0.3Y0.16Zn0.04O3-δ (BCZYZn) was adopted as a part of the oxide-carbonate composite electrolyte. The total ionic conductivity of BCZYZn-carbonate composite is 0.28 S cm-1 at 500 C. Perovskite oxide SrFe0.7Mn0.2Mo0.1O 3-δ was developed and used as cathode. It was found that SrFe0.7Mn0.2Mo0.1O3-δ exhibits a primitive cubic structure with space group Pm3m(221); a = 3.8790(1) Å, V = 58.364(1) Å3. The electrical conductivity of SrFe 0.7Mn0.2Mo0.1O3-δ is 15-26 S cm-1 in the temperature range 400-700 C measured by d.c. method. Single cell with BCZYZn-carbonate composite electrolyte and SrFe 0.7Mn0.2Mo0.1O3-δ cathode was fabricated and tested with humidified H2 (∼3 vol% H2O) as fuel and air as oxidant. A similar configuration cell with lithiated NiO cathode was also constructed for comparison. It was found that neither BaCe 0.5Zr0.3Y0.16Zn0.04O 3-δ nor SrFe0.7Mn0.2Mo 0.1O3-δ is chemically compatible with (Li,Na) 2CO3. The fuel cell performance is not as good as those based on doped ceria-carbonate electrolytes.
Original language | English |
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Pages (from-to) | 16546-16551 |
Number of pages | 6 |
Journal | International Journal of Hydrogen Energy |
Volume | 38 |
Issue number | 36 |
Early online date | 12 Jul 2013 |
DOIs | |
Publication status | Published - 13 Dec 2013 |
Keywords
- cathode
- conductivity
- fuel cell
- oxide-carbonate composite
- perovskite
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Dive into the research topics of 'An intermediate temperature fuel cell based on composite electrolyte of carbonate and doped barium cerate with SrFe0.7Mn0.2Mo 0.1O3-δ cathode'. Together they form a unique fingerprint.Projects
- 1 Finished
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Transfer From H-W: Shanwen Tao:Supergen: Fuel Cells Powering Greener Future (Phase 2),
Tao, S.
EPSRC (Engineering and Physical Sciences Research Council)
1/10/10 → 28/02/14
Project: Research