Microwave‐Assisted Synthesis of Cobalt‐Based Selenides as Catalyst Precursors for the Alkaline Water Oxidation
When used to promote the oxygen evolution reaction (OER), transition‐metal chalcogenides convert into oxyhydroxide/(hydr)oxide catalysts, the performance of which depends on the properties of the precursor. The present study aims to explore these effects for cobalt and cobalt–iron selenides (CoSe n...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-11-01
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| Series: | Advanced Energy & Sustainability Research |
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| Online Access: | https://doi.org/10.1002/aesr.202300108 |
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| author | Eleanora Charnetskaya Tam D. Nguyen Khang N. Dinh Darcy Simondson Sam Johnston Carlos Felipe Garibello Dijon A. Hoogeveen Bernt Johannessen Douglas R. MacFarlane Rosalie K. Hocking Manjunath Chatti Alexandr N. Simonov |
| author_facet | Eleanora Charnetskaya Tam D. Nguyen Khang N. Dinh Darcy Simondson Sam Johnston Carlos Felipe Garibello Dijon A. Hoogeveen Bernt Johannessen Douglas R. MacFarlane Rosalie K. Hocking Manjunath Chatti Alexandr N. Simonov |
| author_sort | Eleanora Charnetskaya |
| collection | DOAJ |
| description | When used to promote the oxygen evolution reaction (OER), transition‐metal chalcogenides convert into oxyhydroxide/(hydr)oxide catalysts, the performance of which depends on the properties of the precursor. The present study aims to explore these effects for cobalt and cobalt–iron selenides (CoSe n and Co1Fe1Se n ) prepared using a simple microwave‐assisted method, in comparison to a reference material synthesized by high‐temperature reaction of CoO x H y with Se vapors. Physical characterization of the microwave‐synthesized CoSe n demonstrates their sheet‐like morphology and identifies Co3Se4 as the major phase, which is essentially completely transformed into CoOOH during the OER. The temperature during the microwave‐assisted CoSe n synthesis affects the crystallinity, the electrochemically active surface area, and thereby the performance of the resulting catalysts. Further improvements in the activity are achieved by combining cobalt with iron into a bimetallic Co1Fe1Se n precursor, which transforms in situ into a CoOOH + FeOOH composite and sustains the OER rate of 100 mA cm−2 (33 A g−1) at an overpotential of ≈ 0.31 and 0.26 V at 24 ± 2 and 80 ± 1 °C, respectively. Satisfactory stability of the Co1Fe1Se n ‐derived electrodes is demonstrated through a 4‐day‐long test at 80 ± 1 °C and 100 mA cm−2. |
| first_indexed | 2024-03-11T11:59:29Z |
| format | Article |
| id | doaj.art-32ec1ddd1efe413c9aa66ae16b0eb283 |
| institution | Directory Open Access Journal |
| issn | 2699-9412 |
| language | English |
| last_indexed | 2024-03-11T11:59:29Z |
| publishDate | 2023-11-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Energy & Sustainability Research |
| spelling | doaj.art-32ec1ddd1efe413c9aa66ae16b0eb2832023-11-08T09:38:04ZengWiley-VCHAdvanced Energy & Sustainability Research2699-94122023-11-01411n/an/a10.1002/aesr.202300108Microwave‐Assisted Synthesis of Cobalt‐Based Selenides as Catalyst Precursors for the Alkaline Water OxidationEleanora Charnetskaya0Tam D. Nguyen1Khang N. Dinh2Darcy Simondson3Sam Johnston4Carlos Felipe Garibello5Dijon A. Hoogeveen6Bernt Johannessen7Douglas R. MacFarlane8Rosalie K. Hocking9Manjunath Chatti10Alexandr N. Simonov11School of Chemistry Monash University Clayton Victoria 3800 AustraliaSchool of Chemistry Monash University Clayton Victoria 3800 AustraliaSchool of Chemistry Monash University Clayton Victoria 3800 AustraliaSchool of Chemistry Monash University Clayton Victoria 3800 AustraliaSchool of Chemistry Monash University Clayton Victoria 3800 AustraliaDepartment of Chemistry and Biotechnology Swinburne University of Technology Hawthorn Victoria 3266 AustraliaSchool of Chemistry Monash University Clayton Victoria 3800 AustraliaAustralian Synchrotron Clayton Victoria 3166 AustraliaSchool of Chemistry Monash University Clayton Victoria 3800 AustraliaDepartment of Chemistry and Biotechnology Swinburne University of Technology Hawthorn Victoria 3266 AustraliaSchool of Chemistry Monash University Clayton Victoria 3800 AustraliaSchool of Chemistry Monash University Clayton Victoria 3800 AustraliaWhen used to promote the oxygen evolution reaction (OER), transition‐metal chalcogenides convert into oxyhydroxide/(hydr)oxide catalysts, the performance of which depends on the properties of the precursor. The present study aims to explore these effects for cobalt and cobalt–iron selenides (CoSe n and Co1Fe1Se n ) prepared using a simple microwave‐assisted method, in comparison to a reference material synthesized by high‐temperature reaction of CoO x H y with Se vapors. Physical characterization of the microwave‐synthesized CoSe n demonstrates their sheet‐like morphology and identifies Co3Se4 as the major phase, which is essentially completely transformed into CoOOH during the OER. The temperature during the microwave‐assisted CoSe n synthesis affects the crystallinity, the electrochemically active surface area, and thereby the performance of the resulting catalysts. Further improvements in the activity are achieved by combining cobalt with iron into a bimetallic Co1Fe1Se n precursor, which transforms in situ into a CoOOH + FeOOH composite and sustains the OER rate of 100 mA cm−2 (33 A g−1) at an overpotential of ≈ 0.31 and 0.26 V at 24 ± 2 and 80 ± 1 °C, respectively. Satisfactory stability of the Co1Fe1Se n ‐derived electrodes is demonstrated through a 4‐day‐long test at 80 ± 1 °C and 100 mA cm−2.https://doi.org/10.1002/aesr.202300108in situoxygen evolution reactionselenideX-ray absorption spectroscopy |
| spellingShingle | Eleanora Charnetskaya Tam D. Nguyen Khang N. Dinh Darcy Simondson Sam Johnston Carlos Felipe Garibello Dijon A. Hoogeveen Bernt Johannessen Douglas R. MacFarlane Rosalie K. Hocking Manjunath Chatti Alexandr N. Simonov Microwave‐Assisted Synthesis of Cobalt‐Based Selenides as Catalyst Precursors for the Alkaline Water Oxidation Advanced Energy & Sustainability Research in situ oxygen evolution reaction selenide X-ray absorption spectroscopy |
| title | Microwave‐Assisted Synthesis of Cobalt‐Based Selenides as Catalyst Precursors for the Alkaline Water Oxidation |
| title_full | Microwave‐Assisted Synthesis of Cobalt‐Based Selenides as Catalyst Precursors for the Alkaline Water Oxidation |
| title_fullStr | Microwave‐Assisted Synthesis of Cobalt‐Based Selenides as Catalyst Precursors for the Alkaline Water Oxidation |
| title_full_unstemmed | Microwave‐Assisted Synthesis of Cobalt‐Based Selenides as Catalyst Precursors for the Alkaline Water Oxidation |
| title_short | Microwave‐Assisted Synthesis of Cobalt‐Based Selenides as Catalyst Precursors for the Alkaline Water Oxidation |
| title_sort | microwave assisted synthesis of cobalt based selenides as catalyst precursors for the alkaline water oxidation |
| topic | in situ oxygen evolution reaction selenide X-ray absorption spectroscopy |
| url | https://doi.org/10.1002/aesr.202300108 |
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