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H2S Solid oxide fuel cell based on a modified Barium cerate perovskite proton conductor.
- Source :
- Ionics; Jun2009, Vol. 15 Issue 3, p385-388, 4p
- Publication Year :
- 2009
-
Abstract
- Urea combustion method was adopted to prepare precursor powder, MCeO<subscript>3</subscript> doped with Zr (M is alkaline earth element, such as barium, strontium, and calcium). The precursor powder has typically perovskite structure after being calcined at 873 K. In 773 K∼1,273 K, BaCe<subscript>0.425</subscript>Zr<subscript>0.475</subscript>Y<subscript>0.1</subscript>O<subscript>3</subscript> has the highest conductivity above 10<superscript>−2</superscript> S cm<superscript>−1</superscript> and good chemical stability, while the phase transition may exist in H<subscript>2</subscript>S atmosphere for the proton conductors. In the single fuel cell composed of MoS<subscript>2</subscript>-BaCe<subscript>0.425</subscript>Zr<subscript>0.475</subscript>Y<subscript>0.1</subscript>O<subscript>3-σ</subscript>-Ag with BaCe<subscript>0.425</subscript>Zr<subscript>0.475</subscript>Y<subscript>0.1</subscript>O<subscript>3-σ</subscript> as electrolyte, the best performance is obtained. The open circuit voltage of fuel cell is all about 0.72 V, the max power density, 1.55 mW cm<superscript>−2</superscript>. The performance drop is attributed to ohmic loss resulting from the separation of electrolyte and electrode, and improvement is required to bring out new anode materials compatible to the proton conductor, BaCe<subscript>0.425</subscript>Zr<subscript>0.475</subscript>Y<subscript>0.1</subscript>O<subscript>3-σ</subscript>, as electrolyte. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09477047
- Volume :
- 15
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Ionics
- Publication Type :
- Academic Journal
- Accession number :
- 49619683
- Full Text :
- https://doi.org/10.1007/s11581-008-0278-0