Silver-modified Ba0.5Sr0.5Co0.8Fe 0.2O3-d as cathodes for a proton conducting solid-oxide fuel cell
Electrochemical performance of silver-modified Ba0.5Sr 0.5Co0.8Fe0.2O3-d (BSCF-Ag) as oxygen reduction electrodes for a protonic intermediate-temperature solid-oxide fuel cell (SOFC-H+) with BaZr0.1Ce0.8Y 0.1O3 (BZCY) electrolyte was investigated. The BSCF-Ag electrodes were prepared by impregnating...
| Main Authors: | , , |
|---|---|
| Format: | Conference Paper |
| Published: |
2010
|
| Online Access: | http://hdl.handle.net/20.500.11937/34398 |
| _version_ | 1848754211782656000 |
|---|---|
| author | Lin, Y. Ran, R. Shao, Zongping |
| author_facet | Lin, Y. Ran, R. Shao, Zongping |
| author_sort | Lin, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Electrochemical performance of silver-modified Ba0.5Sr 0.5Co0.8Fe0.2O3-d (BSCF-Ag) as oxygen reduction electrodes for a protonic intermediate-temperature solid-oxide fuel cell (SOFC-H+) with BaZr0.1Ce0.8Y 0.1O3 (BZCY) electrolyte was investigated. The BSCF-Ag electrodes were prepared by impregnating the porous BSCF electrode with AgNO3 solution followed by reducing with hydrazine and then firing at 850 °C for 1 h. The 3 wt.% silver-modified BSCF (BSCF-3Ag) electrode showed an area specific resistance of 0.25 O cm2 at 650 °C in dry air, compared to around 0.55 O cm2 for a pure BSCF electrode. The activation energy was also reduced from 119 kJ mol-1 for BSCF to only 84 kJ mol-1 for BSCF-3Ag. Anode-supported SOFC-H+ with a BZCY electrolyte and a BSCF-3Ag cathode was fabricated. Peak power density up to 595 mW cm-2 was achieved at 750 °C for a cell with 35 µm thick electrolyte operating on hydrogen fuel, higher than around 485 mW cm-2 for a similar cell with BSCF cathode. However, at reduced temperatures, water had a negative effect on the oxygen reduction over BSCF-Ag electrode, as a result, a worse cell performance was observed for the cell with BSCF-3Ag electrode than that with pure BSCF electrode at 600 °C. © 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved. |
| first_indexed | 2025-11-14T08:36:49Z |
| format | Conference Paper |
| id | curtin-20.500.11937-34398 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:36:49Z |
| publishDate | 2010 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-343982017-09-13T15:11:17Z Silver-modified Ba0.5Sr0.5Co0.8Fe 0.2O3-d as cathodes for a proton conducting solid-oxide fuel cell Lin, Y. Ran, R. Shao, Zongping Electrochemical performance of silver-modified Ba0.5Sr 0.5Co0.8Fe0.2O3-d (BSCF-Ag) as oxygen reduction electrodes for a protonic intermediate-temperature solid-oxide fuel cell (SOFC-H+) with BaZr0.1Ce0.8Y 0.1O3 (BZCY) electrolyte was investigated. The BSCF-Ag electrodes were prepared by impregnating the porous BSCF electrode with AgNO3 solution followed by reducing with hydrazine and then firing at 850 °C for 1 h. The 3 wt.% silver-modified BSCF (BSCF-3Ag) electrode showed an area specific resistance of 0.25 O cm2 at 650 °C in dry air, compared to around 0.55 O cm2 for a pure BSCF electrode. The activation energy was also reduced from 119 kJ mol-1 for BSCF to only 84 kJ mol-1 for BSCF-3Ag. Anode-supported SOFC-H+ with a BZCY electrolyte and a BSCF-3Ag cathode was fabricated. Peak power density up to 595 mW cm-2 was achieved at 750 °C for a cell with 35 µm thick electrolyte operating on hydrogen fuel, higher than around 485 mW cm-2 for a similar cell with BSCF cathode. However, at reduced temperatures, water had a negative effect on the oxygen reduction over BSCF-Ag electrode, as a result, a worse cell performance was observed for the cell with BSCF-3Ag electrode than that with pure BSCF electrode at 600 °C. © 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved. 2010 Conference Paper http://hdl.handle.net/20.500.11937/34398 10.1016/j.ijhydene.2009.12.017 restricted |
| spellingShingle | Lin, Y. Ran, R. Shao, Zongping Silver-modified Ba0.5Sr0.5Co0.8Fe 0.2O3-d as cathodes for a proton conducting solid-oxide fuel cell |
| title | Silver-modified Ba0.5Sr0.5Co0.8Fe 0.2O3-d as cathodes for a proton conducting solid-oxide fuel cell |
| title_full | Silver-modified Ba0.5Sr0.5Co0.8Fe 0.2O3-d as cathodes for a proton conducting solid-oxide fuel cell |
| title_fullStr | Silver-modified Ba0.5Sr0.5Co0.8Fe 0.2O3-d as cathodes for a proton conducting solid-oxide fuel cell |
| title_full_unstemmed | Silver-modified Ba0.5Sr0.5Co0.8Fe 0.2O3-d as cathodes for a proton conducting solid-oxide fuel cell |
| title_short | Silver-modified Ba0.5Sr0.5Co0.8Fe 0.2O3-d as cathodes for a proton conducting solid-oxide fuel cell |
| title_sort | silver-modified ba0.5sr0.5co0.8fe 0.2o3-d as cathodes for a proton conducting solid-oxide fuel cell |
| url | http://hdl.handle.net/20.500.11937/34398 |