Assessment of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells
The performance of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 (PrBC + SDC) composites as electrodes of intermediate-temperature solid oxide fuel cells is investigated. The effects of SDC content on the performance and properties of the electrodes, including thermal expansion, DC conductivity, oxygen desorption,...
| Main Authors: | , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier SA
2010
|
| Online Access: | http://hdl.handle.net/20.500.11937/25102 |
| _version_ | 1848751614196711424 |
|---|---|
| author | Chen, D. Ran, R. Shao, Zongping |
| author_facet | Chen, D. Ran, R. Shao, Zongping |
| author_sort | Chen, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The performance of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 (PrBC + SDC) composites as electrodes of intermediate-temperature solid oxide fuel cells is investigated. The effects of SDC content on the performance and properties of the electrodes, including thermal expansion, DC conductivity, oxygen desorption, area specific resistance (ASR) and cathodic overpotential are evaluated. The thermal expansion coefficient and electrical conductivity of the electrode decreases with an increase in SDC content. However, the electrical conductivity of a composite electrode containing 50 wt% SDC reaches 150 S cm-1 at 600 °C. Among the various electrodes under investigation, an electrode containing 30 wt% SDC exhibits superior electrochemical performance. A peak power density of approximately 1150 and 573 mW cm-2 is reached at 650 and 550 °C, respectively, for an anode-supported thin-film SDC electrolyte cell with the optimal composite electrode. The improved performance of a composite electrode containing 70 wt% PrBC and 30 wt% SDC is attributed to a reduction in the diffusion path of oxygen-ions within the electrode, which is a result of a three-dimensional oxygen-ion diffusion path in SDC and a one-dimensional diffusion path in PrBC. © 2010 Elsevier B.V. |
| first_indexed | 2025-11-14T07:55:31Z |
| format | Journal Article |
| id | curtin-20.500.11937-25102 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:55:31Z |
| publishDate | 2010 |
| publisher | Elsevier SA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-251022023-08-02T06:39:07Z Assessment of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells Chen, D. Ran, R. Shao, Zongping The performance of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 (PrBC + SDC) composites as electrodes of intermediate-temperature solid oxide fuel cells is investigated. The effects of SDC content on the performance and properties of the electrodes, including thermal expansion, DC conductivity, oxygen desorption, area specific resistance (ASR) and cathodic overpotential are evaluated. The thermal expansion coefficient and electrical conductivity of the electrode decreases with an increase in SDC content. However, the electrical conductivity of a composite electrode containing 50 wt% SDC reaches 150 S cm-1 at 600 °C. Among the various electrodes under investigation, an electrode containing 30 wt% SDC exhibits superior electrochemical performance. A peak power density of approximately 1150 and 573 mW cm-2 is reached at 650 and 550 °C, respectively, for an anode-supported thin-film SDC electrolyte cell with the optimal composite electrode. The improved performance of a composite electrode containing 70 wt% PrBC and 30 wt% SDC is attributed to a reduction in the diffusion path of oxygen-ions within the electrode, which is a result of a three-dimensional oxygen-ion diffusion path in SDC and a one-dimensional diffusion path in PrBC. © 2010 Elsevier B.V. 2010 Journal Article http://hdl.handle.net/20.500.11937/25102 10.1016/j.jpowsour.2010.05.018 Elsevier SA restricted |
| spellingShingle | Chen, D. Ran, R. Shao, Zongping Assessment of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells |
| title | Assessment of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells |
| title_full | Assessment of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells |
| title_fullStr | Assessment of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells |
| title_full_unstemmed | Assessment of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells |
| title_short | Assessment of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells |
| title_sort | assessment of prbaco2o5+d + sm 0.2ce0.8o1.9 composites prepared by physical mixing as electrodes of solid oxide fuel cells |
| url | http://hdl.handle.net/20.500.11937/25102 |