Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range
The oxygen catalytic reactions including the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are the basis of many energy transformation and storage devices, e.g., fuel cells, metal-air batteries, and electrolysis cells. Extensive trials have been invested to develop earth-abunda...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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2021
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| Online Access: | https://hdl.handle.net/10356/152957 |
| _version_ | 1826111106182021120 |
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| author | Yin, Mingming He, Miao Hu, Ruigan Sun, Zixu Li, Hong |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Yin, Mingming He, Miao Hu, Ruigan Sun, Zixu Li, Hong |
| author_sort | Yin, Mingming |
| collection | NTU |
| description | The oxygen catalytic reactions including the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are the basis of many energy transformation and storage devices, e.g., fuel cells, metal-air batteries, and electrolysis cells. Extensive trials have been invested to develop earth-abundant oxygen catalysts to lower the cost and to boost the energy efficiency of these electrochemical devices. Among these oxygen catalysts, manganese dioxide (MnO2) is attracting ever-increasing interest owing to its high earth-abundance, low cost, and well-balanced activity-stability performances. In this review, the mechanisms of ORR and OER catalysis, methods for activity enhancement, and various applications of MnO2 oxygen catalysts in energy conversion and storage are summarized and discussed. As the ORR and OER catalysts in the whole pH range, the Mn3+ intermediate in MnO2 is identified as the active center. To optimize the catalytic performance of MnO2, the strategies of heteroatom doping, morphology tuning, heterostructure forming, conductor supporting, defect engineering, and valence regulating are implemented. Moreover, the applications of MnO2 in metal-air batteries, fuel cells and water splitting systems are detailed. Lastly, some prospects of MnO2 oxygen catalysts are proposed for the further development. |
| first_indexed | 2024-10-01T02:45:12Z |
| format | Journal Article |
| id | ntu-10356/152957 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:45:12Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1529572023-03-04T17:18:32Z Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range Yin, Mingming He, Miao Hu, Ruigan Sun, Zixu Li, Hong School of Mechanical and Aerospace Engineering Engineering::Chemical engineering::Industrial electrochemistry Manganese Dioxides Oxygen Electrocatalysts Metal-air Batteries Fuel Cells Water Splitting The oxygen catalytic reactions including the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are the basis of many energy transformation and storage devices, e.g., fuel cells, metal-air batteries, and electrolysis cells. Extensive trials have been invested to develop earth-abundant oxygen catalysts to lower the cost and to boost the energy efficiency of these electrochemical devices. Among these oxygen catalysts, manganese dioxide (MnO2) is attracting ever-increasing interest owing to its high earth-abundance, low cost, and well-balanced activity-stability performances. In this review, the mechanisms of ORR and OER catalysis, methods for activity enhancement, and various applications of MnO2 oxygen catalysts in energy conversion and storage are summarized and discussed. As the ORR and OER catalysts in the whole pH range, the Mn3+ intermediate in MnO2 is identified as the active center. To optimize the catalytic performance of MnO2, the strategies of heteroatom doping, morphology tuning, heterostructure forming, conductor supporting, defect engineering, and valence regulating are implemented. Moreover, the applications of MnO2 in metal-air batteries, fuel cells and water splitting systems are detailed. Lastly, some prospects of MnO2 oxygen catalysts are proposed for the further development. National Research Foundation (NRF) Accepted version Part of this work was conducted within the Delta-NTU Corporate Lab for CyberPhysical Systems with funding support from Delta Electronics Inc. and the National Research Foundation (NRF) Singapore under the Corp Lab@University Scheme. 2021-10-26T01:36:35Z 2021-10-26T01:36:35Z 2021 Journal Article Yin, M., He, M., Hu, R., Sun, Z. & Li, H. (2021). Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range. Journal of Power Sources, 494, 229779-. https://dx.doi.org/10.1016/j.jpowsour.2021.229779 0378-7753 https://hdl.handle.net/10356/152957 10.1016/j.jpowsour.2021.229779 494 229779 en Journal of Power Sources © 2021 Elsevier B.V. All rights reserved. This paper was published in Journal of Power Sources and is made available with permission of Elsevier B.V. application/pdf |
| spellingShingle | Engineering::Chemical engineering::Industrial electrochemistry Manganese Dioxides Oxygen Electrocatalysts Metal-air Batteries Fuel Cells Water Splitting Yin, Mingming He, Miao Hu, Ruigan Sun, Zixu Li, Hong Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range |
| title | Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range |
| title_full | Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range |
| title_fullStr | Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range |
| title_full_unstemmed | Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range |
| title_short | Manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full pH range |
| title_sort | manganese dioxides for oxygen electrocatalysis in energy conversion and storage systems over full ph range |
| topic | Engineering::Chemical engineering::Industrial electrochemistry Manganese Dioxides Oxygen Electrocatalysts Metal-air Batteries Fuel Cells Water Splitting |
| url | https://hdl.handle.net/10356/152957 |
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