Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries
Efficient bifunctional electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are required for metal air batteries, to replace costly metals, such as Pt and Ir/Ru based compounds, which are typically used as benchmarks for ORR and OER, respectively. Isolated single...
| Main Authors: | , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/147555 |
| _version_ | 1811683434385375232 |
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| author | Jose, Vishal Hu, Huimin Edison, Eldho Manalastas, William, Jr. Ren, Hao Kidkhunthod, Pinit Sreejith, Sivaramapanicker Jayakumar, Anjali Nsanzimana, Jean Marie Vianney Srinivasan, Madhavi Choi, Jinho Lee, Jong-Min |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Jose, Vishal Hu, Huimin Edison, Eldho Manalastas, William, Jr. Ren, Hao Kidkhunthod, Pinit Sreejith, Sivaramapanicker Jayakumar, Anjali Nsanzimana, Jean Marie Vianney Srinivasan, Madhavi Choi, Jinho Lee, Jong-Min |
| author_sort | Jose, Vishal |
| collection | NTU |
| description | Efficient bifunctional electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are required for metal air batteries, to replace costly metals, such as Pt and Ir/Ru based compounds, which are typically used as benchmarks for ORR and OER, respectively. Isolated single atomic sites coordinated with nitrogen on carbon supports (M-N-C) have promising performance for replacement of precious metal catalysts. However, most of monometallic M-N-C catalysts demonstrate unsatisfactory bifunctional performance. Herein, a facile way of preparing bimetallic Fe and Co sites entrapped in nitrogen-doped hollow carbon nanospheres (Fe,Co-SA/CS) is explored, drawing on the unique structure and pore characteristics of Zeolitic imidazole frameworks and molecular size of Ferrocene, an Fe containing species. Fe,Co-SA/CS showed an ORR onset potential and half wave potential of 0.96 and 0.86 V, respectively. For OER, (Fe,Co)-SA/CS attained its anodic current density of 10 mA cm at an overpotential of 360 mV. Interestingly, the oxygen electrode activity (ΔE) for (Fe,Co)-SA/CS and commercial Pt/C-RuO is calculated to be 0.73 V, exhibiting the bifunctional catalytic activity of (Fe,Co)-SA/CS. (Fe,Co)-SA/CS evidenced desirable specific capacity and cyclic stability than Pt/C-RuO2 mixture when utilized as an air cathode in a homemade Zinc-air battery. |
| first_indexed | 2024-10-01T04:12:40Z |
| format | Journal Article |
| id | ntu-10356/147555 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:12:40Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1475552023-07-14T16:01:51Z Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries Jose, Vishal Hu, Huimin Edison, Eldho Manalastas, William, Jr. Ren, Hao Kidkhunthod, Pinit Sreejith, Sivaramapanicker Jayakumar, Anjali Nsanzimana, Jean Marie Vianney Srinivasan, Madhavi Choi, Jinho Lee, Jong-Min School of Materials Science and Engineering School of Chemical and Biomedical Engineering Energy Research Institute @ NTU (ERI@N) Engineering Single Atoms Oxygen Electrocatalysis Efficient bifunctional electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are required for metal air batteries, to replace costly metals, such as Pt and Ir/Ru based compounds, which are typically used as benchmarks for ORR and OER, respectively. Isolated single atomic sites coordinated with nitrogen on carbon supports (M-N-C) have promising performance for replacement of precious metal catalysts. However, most of monometallic M-N-C catalysts demonstrate unsatisfactory bifunctional performance. Herein, a facile way of preparing bimetallic Fe and Co sites entrapped in nitrogen-doped hollow carbon nanospheres (Fe,Co-SA/CS) is explored, drawing on the unique structure and pore characteristics of Zeolitic imidazole frameworks and molecular size of Ferrocene, an Fe containing species. Fe,Co-SA/CS showed an ORR onset potential and half wave potential of 0.96 and 0.86 V, respectively. For OER, (Fe,Co)-SA/CS attained its anodic current density of 10 mA cm at an overpotential of 360 mV. Interestingly, the oxygen electrode activity (ΔE) for (Fe,Co)-SA/CS and commercial Pt/C-RuO is calculated to be 0.73 V, exhibiting the bifunctional catalytic activity of (Fe,Co)-SA/CS. (Fe,Co)-SA/CS evidenced desirable specific capacity and cyclic stability than Pt/C-RuO2 mixture when utilized as an air cathode in a homemade Zinc-air battery. Ministry of Education (MOE) This work was supported by the AcRF Tier 1 grant (RG105/19), provided by Ministry of Education in Singapore. H.H. and J.C. like to thank National Natural Science Foundation of China (Grant No. 11874044). 2021-04-16T07:30:36Z 2021-04-16T07:30:36Z 2021 Journal Article Jose, V., Hu, H., Edison, E., Manalastas, W. J., Ren, H., Kidkhunthod, P., Sreejith, S., Jayakumar, A., Nsanzimana, J. M. V., Srinivasan, M., Choi, J. & Lee, J. (2021). Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries. Small Methods, 5(2), 2000751-. https://dx.doi.org/10.1002/smtd.202000751 2366-9608 0000-0001-6300-0866 https://hdl.handle.net/10356/147555 10.1002/smtd.202000751 2-s2.0-85092203939 2 5 2000751 en Small Methods This is the peer reviewed version of the following article: Jose, V., Hu, H., Edison, E., Manalastas, W. J., Ren, H., Kidkhunthod, P., Sreejith, S., Jayakumar, A., Nsanzimana, J. M. V., Srinivasan, M., Choi, J. & Lee, J. (2021). Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries. Small Methods, 5(2), 2000751-, which has been published in final form at https://doi.org/10.1002/smtd.202000751. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Engineering Single Atoms Oxygen Electrocatalysis Jose, Vishal Hu, Huimin Edison, Eldho Manalastas, William, Jr. Ren, Hao Kidkhunthod, Pinit Sreejith, Sivaramapanicker Jayakumar, Anjali Nsanzimana, Jean Marie Vianney Srinivasan, Madhavi Choi, Jinho Lee, Jong-Min Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries |
| title | Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries |
| title_full | Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries |
| title_fullStr | Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries |
| title_full_unstemmed | Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries |
| title_short | Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries |
| title_sort | modulation of single atomic co and fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable zn air batteries |
| topic | Engineering Single Atoms Oxygen Electrocatalysis |
| url | https://hdl.handle.net/10356/147555 |
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