On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells
Sr2Fe1.5Mo0.5O6-δ-Sm0.2Ce0.8O2-δ (SFMO-SDC) composites are high-efficiency fuel electrode materials for reversible solid oxide cells (rSOCs). Systematic variation in the SFMO-SDC composite shows that the composite with 40 wt% of SDC gives rise to the highest amount of oxygen vacancy and the highest...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2023
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| Online Access: | https://hdl.handle.net/10356/169925 |
| _version_ | 1824454842804862976 |
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| author | Li, Hao-Yang Kamlungsua, Kittiwat Ng, Kelvin Shin, Ji-Yoon Su, Pei-Chen |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Li, Hao-Yang Kamlungsua, Kittiwat Ng, Kelvin Shin, Ji-Yoon Su, Pei-Chen |
| author_sort | Li, Hao-Yang |
| collection | NTU |
| description | Sr2Fe1.5Mo0.5O6-δ-Sm0.2Ce0.8O2-δ (SFMO-SDC) composites are high-efficiency fuel electrode materials for reversible solid oxide cells (rSOCs). Systematic variation in the SFMO-SDC composite shows that the composite with 40 wt% of SDC gives rise to the highest amount of oxygen vacancy and the highest number of electronic defects due to multiple electronic activation effects. Polarization resistance changes over the steam content show the parabolic trend with the optimal humidity at 20 vol% at open circuit voltage and in fuel cell mode, while in electrolyzer mode, highly humidified hydrogen is favored. Electrochemical studies and distributions of relaxation times analysis illustrate that the rate-determining step in fuel cell mode is the water desorption reaction whereas that in electrolyzer and at open circuit voltage (OCV) is surface chemical diffusion/oxide transport processes. |
| first_indexed | 2025-02-19T03:28:45Z |
| format | Journal Article |
| id | ntu-10356/169925 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:28:45Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1699252023-08-15T03:25:18Z On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells Li, Hao-Yang Kamlungsua, Kittiwat Ng, Kelvin Shin, Ji-Yoon Su, Pei-Chen School of Mechanical and Aerospace Engineering Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) Singapore Centre for 3D Printing Engineering::Mechanical engineering Composite Double Perovskite Sr2Fe1.5Mo0.5O6-δ-Sm0.2Ce0.8O2-δ (SFMO-SDC) composites are high-efficiency fuel electrode materials for reversible solid oxide cells (rSOCs). Systematic variation in the SFMO-SDC composite shows that the composite with 40 wt% of SDC gives rise to the highest amount of oxygen vacancy and the highest number of electronic defects due to multiple electronic activation effects. Polarization resistance changes over the steam content show the parabolic trend with the optimal humidity at 20 vol% at open circuit voltage and in fuel cell mode, while in electrolyzer mode, highly humidified hydrogen is favored. Electrochemical studies and distributions of relaxation times analysis illustrate that the rate-determining step in fuel cell mode is the water desorption reaction whereas that in electrolyzer and at open circuit voltage (OCV) is surface chemical diffusion/oxide transport processes. Ministry of Education (MOE) The authors would like to acknowledge the funding support from Singapore Ministry of Education (MOE) Grant No. RG153/19 (S). 2023-08-15T03:25:18Z 2023-08-15T03:25:18Z 2023 Journal Article Li, H., Kamlungsua, K., Ng, K., Shin, J. & Su, P. (2023). On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells. Fuel, 348, 128642-. https://dx.doi.org/10.1016/j.fuel.2023.128642 0016-2361 https://hdl.handle.net/10356/169925 10.1016/j.fuel.2023.128642 2-s2.0-85158030812 348 128642 en RG153/19 (S) Fuel © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Composite Double Perovskite Li, Hao-Yang Kamlungsua, Kittiwat Ng, Kelvin Shin, Ji-Yoon Su, Pei-Chen On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells |
| title | On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells |
| title_full | On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells |
| title_fullStr | On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells |
| title_full_unstemmed | On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells |
| title_short | On the composition of Sr₂Fe₁.₅Mo₀.₅O₆₋δ – Sm₀.₂Ce₀.₈O₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells |
| title_sort | on the composition of sr₂fe₁ ₅mo₀ ₅o₆₋δ sm₀ ₂ce₀ ₈o₂₋δ composite as fuel electrodes for hydrogen reversible solid oxide cells |
| topic | Engineering::Mechanical engineering Composite Double Perovskite |
| url | https://hdl.handle.net/10356/169925 |
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