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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.07300 |
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| _version_ | 1866912066767421440 |
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| author | Wang, Yuqin He, Lizi Han, Ning |
| author_facet | Wang, Yuqin He, Lizi Han, Ning |
| contents | Exploring and developing low-cost, high-performance, and stable catalysts for the oxygen reduction reaction (ORR) is of great importance, though progress is ongoing. In this work, a simple evaporation-pyrolysis method is employed to synthesize 3D porous electrocatalysts, referred to as Fe-Co-NC, which are carbonization products at 900°C. These catalysts are composed of carbon nanoparticles and metallic FeCo doped nitrogen-enriched carbon nanotubes, produced through the carbonization of pristine ZIF-8, resulting in highly efficient and durable ORR electrocatalysts. The Fe-Co-NC structure exhibits a 3D open porous texture, abundant active sites, favorable nitrogen bonding, and a high specific surface area, all of which contribute to excellent ORR activity. The optimal Fe-Co-NC catalyst demonstrates exceptional ORR performance, with a high onset potential of 0.96 V and a half-wave potential of 0.86 V versus RHE, rivaling the performance of commercially available Pt/C in an alkaline electrolyte. Additionally, the Fe-Co-NC catalyst shows superior stability compared to Pt/C, which is crucial for the development of novel electrocatalysts based on non-precious metals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_07300 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A high-performance nitrogen-rich ZIF-8-derived Fe-Co-NC electrocatalyst for the oxygen reduction reaction Wang, Yuqin He, Lizi Han, Ning Materials Science Exploring and developing low-cost, high-performance, and stable catalysts for the oxygen reduction reaction (ORR) is of great importance, though progress is ongoing. In this work, a simple evaporation-pyrolysis method is employed to synthesize 3D porous electrocatalysts, referred to as Fe-Co-NC, which are carbonization products at 900°C. These catalysts are composed of carbon nanoparticles and metallic FeCo doped nitrogen-enriched carbon nanotubes, produced through the carbonization of pristine ZIF-8, resulting in highly efficient and durable ORR electrocatalysts. The Fe-Co-NC structure exhibits a 3D open porous texture, abundant active sites, favorable nitrogen bonding, and a high specific surface area, all of which contribute to excellent ORR activity. The optimal Fe-Co-NC catalyst demonstrates exceptional ORR performance, with a high onset potential of 0.96 V and a half-wave potential of 0.86 V versus RHE, rivaling the performance of commercially available Pt/C in an alkaline electrolyte. Additionally, the Fe-Co-NC catalyst shows superior stability compared to Pt/C, which is crucial for the development of novel electrocatalysts based on non-precious metals. |
| title | A high-performance nitrogen-rich ZIF-8-derived Fe-Co-NC electrocatalyst for the oxygen reduction reaction |
| topic | Materials Science |
| url | https://arxiv.org/abs/2410.07300 |