Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures
The development of advanced electrolysis technologies such as anion exchange membrane water electrolyzer (AEMWE) is central to the vision of a sustainable energy future. Key to the realization of such AEMWE technology lies in the exploration of low-cost and high-efficient catalysts for facilitating...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | http://purl.org/au-research/grants/arc/DP200103315 http://hdl.handle.net/20.500.11937/95992 |
| _version_ | 1848766067739983872 |
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| author | Abdelghafar, F. Xu, Xiaomin Jiang, S.P. Shao, Zongping |
| author_facet | Abdelghafar, F. Xu, Xiaomin Jiang, S.P. Shao, Zongping |
| author_sort | Abdelghafar, F. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The development of advanced electrolysis technologies such as anion exchange membrane water electrolyzer (AEMWE) is central to the vision of a sustainable energy future. Key to the realization of such AEMWE technology lies in the exploration of low-cost and high-efficient catalysts for facilitating the anodic oxygen evolution reaction (OER). Despite tremendous efforts in the fundamental research, most of today's OER works are conducted under room temperature, which deviates significantly with AEMWE's operating temperature (50–80 °C). To bridge this gap, it is highly desirable to obtain insights into the OER catalytic behavior at elevated temperatures. Herein, using the well-known perovskite catalyst Ba0.5Sr0.5Co0.8Fe0.2O3–δ (BSCF) as a proof of concept, the effect of temperature on the variation in OER catalytic activity and stability is evaluated. It is found that the BSCF's activity increases with increasing temperature due to enhanced lattice oxygen participation promoting the lattice oxygen-mediated OER process. Further, surface amorphization and cation leaching of BSCF become more pronounced as temperature increases, causing a somewhat attenuated OER stability. These new understandings of the fundamental OER catalysis over perovskite materials at industrial-relevant temperature conditions are expected to have strong implications for the research of OER catalysts to be deployed in practical water electrolyzers. |
| first_indexed | 2025-11-14T11:45:15Z |
| format | Journal Article |
| id | curtin-20.500.11937-95992 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | eng |
| last_indexed | 2025-11-14T11:45:15Z |
| publishDate | 2024 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-959922024-10-09T08:32:27Z Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures Abdelghafar, F. Xu, Xiaomin Jiang, S.P. Shao, Zongping elevated temperature lattice oxygen participation oxygen evolution reaction perovskite water splitting The development of advanced electrolysis technologies such as anion exchange membrane water electrolyzer (AEMWE) is central to the vision of a sustainable energy future. Key to the realization of such AEMWE technology lies in the exploration of low-cost and high-efficient catalysts for facilitating the anodic oxygen evolution reaction (OER). Despite tremendous efforts in the fundamental research, most of today's OER works are conducted under room temperature, which deviates significantly with AEMWE's operating temperature (50–80 °C). To bridge this gap, it is highly desirable to obtain insights into the OER catalytic behavior at elevated temperatures. Herein, using the well-known perovskite catalyst Ba0.5Sr0.5Co0.8Fe0.2O3–δ (BSCF) as a proof of concept, the effect of temperature on the variation in OER catalytic activity and stability is evaluated. It is found that the BSCF's activity increases with increasing temperature due to enhanced lattice oxygen participation promoting the lattice oxygen-mediated OER process. Further, surface amorphization and cation leaching of BSCF become more pronounced as temperature increases, causing a somewhat attenuated OER stability. These new understandings of the fundamental OER catalysis over perovskite materials at industrial-relevant temperature conditions are expected to have strong implications for the research of OER catalysts to be deployed in practical water electrolyzers. 2024 Journal Article http://hdl.handle.net/20.500.11937/95992 10.1002/cssc.202301534 eng http://purl.org/au-research/grants/arc/DP200103315 http://purl.org/au-research/grants/arc/DP230100685 http://purl.org/au-research/grants/arc/IH220100012 http://purl.org/au-research/grants/arc/DE240101013 http://purl.org/au-research/grants/arc/DP200103332 http://creativecommons.org/licenses/by/4.0/ fulltext |
| spellingShingle | elevated temperature lattice oxygen participation oxygen evolution reaction perovskite water splitting Abdelghafar, F. Xu, Xiaomin Jiang, S.P. Shao, Zongping Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures |
| title | Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures |
| title_full | Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures |
| title_fullStr | Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures |
| title_full_unstemmed | Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures |
| title_short | Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures |
| title_sort | perovskite for electrocatalytic oxygen evolution at elevated temperatures |
| topic | elevated temperature lattice oxygen participation oxygen evolution reaction perovskite water splitting |
| url | http://purl.org/au-research/grants/arc/DP200103315 http://purl.org/au-research/grants/arc/DP200103315 http://purl.org/au-research/grants/arc/DP200103315 http://purl.org/au-research/grants/arc/DP200103315 http://purl.org/au-research/grants/arc/DP200103315 http://hdl.handle.net/20.500.11937/95992 |