CoFe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a Prussian blue analogue
Highly active bifunctional catalysts for oxygen evolution reaction (OER) and oxygen reduction reactions (ORR) have attracted increasing attention in metal-air batteries and fuel cells. CoFe nanoalloy particles encapsulated in nitrogen-doped carbon and nitrogen-doped carbon nanotubes (CoFe@NC-NCNT-H)...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier B.V.
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68188 |
| _version_ | 1848761766737084416 |
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| author | Shang, Z. Chen, Z. Zhang, Z. Yu, J. Tan, S. Ciucci, F. Shao, Zongping Lei, H. Chen, D. |
| author_facet | Shang, Z. Chen, Z. Zhang, Z. Yu, J. Tan, S. Ciucci, F. Shao, Zongping Lei, H. Chen, D. |
| author_sort | Shang, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Highly active bifunctional catalysts for oxygen evolution reaction (OER) and oxygen reduction reactions (ORR) have attracted increasing attention in metal-air batteries and fuel cells. CoFe nanoalloy particles encapsulated in nitrogen-doped carbon and nitrogen-doped carbon nanotubes (CoFe@NC-NCNT-H) are synthesized by pyrolyzing a Prussian blue analogue precursor (i.e. Fe3[Co(CN)6]2) as low as 600 °C, and followed by HNO3 treatment. Such low temperature pyrolysis and HNO3 treatment affords the hybrid mesoporous material with a high level of nitrogen content (∼10%) and a relatively high specific surface area (∼210.5 m2 g−1), capable of providing active sites and mass transport channels. In alkaline solution, CoFe@NC-NCNT-H is highly active towards OER with a low onset potential (∼1.35 V) and a small overpotential (∼380 mV) to reach 10.0 mA cm−2, comparable to the state-of-the-art RuO2. CoFe@NC-NCNT-H is also a good ORR catalyst, and more importantly it exhibits an improved stability compared to commercial Pt/C. CoFe@NC-NCNT-H displays promise as a bifunctional catalyst with an extremely low potential difference (∼0.87 V between ORR at −3.0 mA cm−2 and OER at 10.0 mA cm−2), superior to commercial Pt/C and RuO2. The facilely prepared CoFe@NC-NCNT-H with high bifunctional performance and stability promises great potential for ORR and OER. |
| first_indexed | 2025-11-14T10:36:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-68188 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:36:54Z |
| publishDate | 2018 |
| publisher | Elsevier B.V. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-681882020-06-15T02:05:24Z CoFe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a Prussian blue analogue Shang, Z. Chen, Z. Zhang, Z. Yu, J. Tan, S. Ciucci, F. Shao, Zongping Lei, H. Chen, D. Highly active bifunctional catalysts for oxygen evolution reaction (OER) and oxygen reduction reactions (ORR) have attracted increasing attention in metal-air batteries and fuel cells. CoFe nanoalloy particles encapsulated in nitrogen-doped carbon and nitrogen-doped carbon nanotubes (CoFe@NC-NCNT-H) are synthesized by pyrolyzing a Prussian blue analogue precursor (i.e. Fe3[Co(CN)6]2) as low as 600 °C, and followed by HNO3 treatment. Such low temperature pyrolysis and HNO3 treatment affords the hybrid mesoporous material with a high level of nitrogen content (∼10%) and a relatively high specific surface area (∼210.5 m2 g−1), capable of providing active sites and mass transport channels. In alkaline solution, CoFe@NC-NCNT-H is highly active towards OER with a low onset potential (∼1.35 V) and a small overpotential (∼380 mV) to reach 10.0 mA cm−2, comparable to the state-of-the-art RuO2. CoFe@NC-NCNT-H is also a good ORR catalyst, and more importantly it exhibits an improved stability compared to commercial Pt/C. CoFe@NC-NCNT-H displays promise as a bifunctional catalyst with an extremely low potential difference (∼0.87 V between ORR at −3.0 mA cm−2 and OER at 10.0 mA cm−2), superior to commercial Pt/C and RuO2. The facilely prepared CoFe@NC-NCNT-H with high bifunctional performance and stability promises great potential for ORR and OER. 2018 Journal Article http://hdl.handle.net/20.500.11937/68188 10.1016/j.jallcom.2018.01.019 Elsevier B.V. restricted |
| spellingShingle | Shang, Z. Chen, Z. Zhang, Z. Yu, J. Tan, S. Ciucci, F. Shao, Zongping Lei, H. Chen, D. CoFe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a Prussian blue analogue |
| title | CoFe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a Prussian blue analogue |
| title_full | CoFe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a Prussian blue analogue |
| title_fullStr | CoFe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a Prussian blue analogue |
| title_full_unstemmed | CoFe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a Prussian blue analogue |
| title_short | CoFe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a Prussian blue analogue |
| title_sort | cofe nanoalloy particles encapsulated in nitrogen-doped carbon layers as bifunctional oxygen catalyst derived from a prussian blue analogue |
| url | http://hdl.handle.net/20.500.11937/68188 |