Anchoring perovskite LaMnO3 nanoparticles on biomass−derived N, P co−doped porous carbon for efficient oxygen reduction
We propose a new perovskite/carbon composite of LaMnO 3 nanoparticles anchored on N and P co-doped porous carbon as an efficient electrocatalyst for oxygen reduction reaction (ORR) in alkaline solution. A facile two-step method is applied for the synthesis of such composite, involving the pyrolysis...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Pergamon
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/66721 |
| _version_ | 1848761376215924736 |
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| author | Hu, J. Shi, Z. Su, Chao Lu, B. Shao, Zongping Huang, H. |
| author_facet | Hu, J. Shi, Z. Su, Chao Lu, B. Shao, Zongping Huang, H. |
| author_sort | Hu, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We propose a new perovskite/carbon composite of LaMnO 3 nanoparticles anchored on N and P co-doped porous carbon as an efficient electrocatalyst for oxygen reduction reaction (ORR) in alkaline solution. A facile two-step method is applied for the synthesis of such composite, involving the pyrolysis of cheap, abundant and renewable natural okara with the formation of N and P co-doped porous carbon for the first step, and the deposition of LaMnO 3 nanoparticles on the carbon surface by sol-gel synthesis at the second step. A synergistic effect is built between the LaMnO 3 nanoparticles and the porous carbon substrate, resulting in obviously improved ORR activity as compared with the individual N, P co-doped carbon and the nanosized LaMnO 3 electrocatalysts, in terms of onset potential, limiting current density, and stability. The LaMnO 3 /N, P co-doped carbon composites further evaluated as an air electrode in a Zn-air battery, demonstrating attractive performance, including high discharge voltage plateau (~1.2 V) and excellent stability with negligible degradation in voltage at 25 mA cm -1 discharge current for 24 h. The present results highly promise the LaMnO 3 /biocarbon nanocomposite as a potential metal-free ORR electrocatalyst, which may find a wide use in metal-air batteries or fuel cells. |
| first_indexed | 2025-11-14T10:30:41Z |
| format | Journal Article |
| id | curtin-20.500.11937-66721 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:30:41Z |
| publishDate | 2018 |
| publisher | Pergamon |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-667212020-06-15T04:40:55Z Anchoring perovskite LaMnO3 nanoparticles on biomass−derived N, P co−doped porous carbon for efficient oxygen reduction Hu, J. Shi, Z. Su, Chao Lu, B. Shao, Zongping Huang, H. We propose a new perovskite/carbon composite of LaMnO 3 nanoparticles anchored on N and P co-doped porous carbon as an efficient electrocatalyst for oxygen reduction reaction (ORR) in alkaline solution. A facile two-step method is applied for the synthesis of such composite, involving the pyrolysis of cheap, abundant and renewable natural okara with the formation of N and P co-doped porous carbon for the first step, and the deposition of LaMnO 3 nanoparticles on the carbon surface by sol-gel synthesis at the second step. A synergistic effect is built between the LaMnO 3 nanoparticles and the porous carbon substrate, resulting in obviously improved ORR activity as compared with the individual N, P co-doped carbon and the nanosized LaMnO 3 electrocatalysts, in terms of onset potential, limiting current density, and stability. The LaMnO 3 /N, P co-doped carbon composites further evaluated as an air electrode in a Zn-air battery, demonstrating attractive performance, including high discharge voltage plateau (~1.2 V) and excellent stability with negligible degradation in voltage at 25 mA cm -1 discharge current for 24 h. The present results highly promise the LaMnO 3 /biocarbon nanocomposite as a potential metal-free ORR electrocatalyst, which may find a wide use in metal-air batteries or fuel cells. 2018 Journal Article http://hdl.handle.net/20.500.11937/66721 10.1016/j.electacta.2018.04.081 Pergamon restricted |
| spellingShingle | Hu, J. Shi, Z. Su, Chao Lu, B. Shao, Zongping Huang, H. Anchoring perovskite LaMnO3 nanoparticles on biomass−derived N, P co−doped porous carbon for efficient oxygen reduction |
| title | Anchoring perovskite LaMnO3 nanoparticles on biomass−derived N, P co−doped porous carbon for efficient oxygen reduction |
| title_full | Anchoring perovskite LaMnO3 nanoparticles on biomass−derived N, P co−doped porous carbon for efficient oxygen reduction |
| title_fullStr | Anchoring perovskite LaMnO3 nanoparticles on biomass−derived N, P co−doped porous carbon for efficient oxygen reduction |
| title_full_unstemmed | Anchoring perovskite LaMnO3 nanoparticles on biomass−derived N, P co−doped porous carbon for efficient oxygen reduction |
| title_short | Anchoring perovskite LaMnO3 nanoparticles on biomass−derived N, P co−doped porous carbon for efficient oxygen reduction |
| title_sort | anchoring perovskite lamno3 nanoparticles on biomass−derived n, p co−doped porous carbon for efficient oxygen reduction |
| url | http://hdl.handle.net/20.500.11937/66721 |