Mesoporous Surface-Sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> Nanosheets Integrated with N/S Co-Doped Graphene as a Robust Bifunctional Electrocatalyst for Oxygen Evolution and Reduction Reactions
Playing a significant role in electrochemical energy conversion and storage systems, heteroatom-doped transition metal oxides are key materials for oxygen-involving reactions. Herein, mesoporous surface-sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> nanosheets integrated with N/S...
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MDPI AG
2023-02-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/5/2221 |
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| author | Lingxue Meng Yige Wang Wenwei Liu Chunlei Fan Haoxiong Nan Jiang Wang Jia Yu |
| author_facet | Lingxue Meng Yige Wang Wenwei Liu Chunlei Fan Haoxiong Nan Jiang Wang Jia Yu |
| author_sort | Lingxue Meng |
| collection | DOAJ |
| description | Playing a significant role in electrochemical energy conversion and storage systems, heteroatom-doped transition metal oxides are key materials for oxygen-involving reactions. Herein, mesoporous surface-sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> nanosheets integrated with N/S co-doped graphene (Fe–Co<sub>3</sub>O<sub>4</sub>–S/NSG) were designed as composite bifunctional electrocatalysts for the oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR). Compared with the Co<sub>3</sub>O<sub>4</sub>–S/NSG catalyst, it exhibited superior activity in the alkaline electrolytes by delivering an OER overpotential of 289 mV at 10 mA cm<sup>−2</sup> and an ORR half-wave potential of 0.77 V vs. RHE. Additionally, Fe–Co<sub>3</sub>O<sub>4</sub>–S/NSG kept stable at 4.2 mA cm<sup>−2</sup> for 12 h without significant attenuation to render robust durability. This work not only demonstrates the satisfactory effect of the transition-metal cationic modification represented by iron doping on the electrocatalytic performance of Co<sub>3</sub>O<sub>4</sub>, but it also provides a new insight on the design of OER/ORR bifunctional electrocatalysts for efficient energy conversion. |
| first_indexed | 2024-03-11T07:17:00Z |
| format | Article |
| id | doaj.art-cda6efe2f4c748c887de9e553b72e403 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T07:17:00Z |
| publishDate | 2023-02-01 |
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| series | Molecules |
| spelling | doaj.art-cda6efe2f4c748c887de9e553b72e4032023-11-17T08:13:38ZengMDPI AGMolecules1420-30492023-02-01285222110.3390/molecules28052221Mesoporous Surface-Sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> Nanosheets Integrated with N/S Co-Doped Graphene as a Robust Bifunctional Electrocatalyst for Oxygen Evolution and Reduction ReactionsLingxue Meng0Yige Wang1Wenwei Liu2Chunlei Fan3Haoxiong Nan4Jiang Wang5Jia Yu6School of Science, Hainan University, Haikou 570228, ChinaSchool of Science, Hainan University, Haikou 570228, ChinaSchool of Science, Hainan University, Haikou 570228, ChinaSchool of Science, Hainan University, Haikou 570228, ChinaSchool of Science, Hainan University, Haikou 570228, ChinaSchool of Science, Hainan University, Haikou 570228, ChinaMaterials Genome Institute, Shanghai University, Shanghai 200444, ChinaPlaying a significant role in electrochemical energy conversion and storage systems, heteroatom-doped transition metal oxides are key materials for oxygen-involving reactions. Herein, mesoporous surface-sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> nanosheets integrated with N/S co-doped graphene (Fe–Co<sub>3</sub>O<sub>4</sub>–S/NSG) were designed as composite bifunctional electrocatalysts for the oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR). Compared with the Co<sub>3</sub>O<sub>4</sub>–S/NSG catalyst, it exhibited superior activity in the alkaline electrolytes by delivering an OER overpotential of 289 mV at 10 mA cm<sup>−2</sup> and an ORR half-wave potential of 0.77 V vs. RHE. Additionally, Fe–Co<sub>3</sub>O<sub>4</sub>–S/NSG kept stable at 4.2 mA cm<sup>−2</sup> for 12 h without significant attenuation to render robust durability. This work not only demonstrates the satisfactory effect of the transition-metal cationic modification represented by iron doping on the electrocatalytic performance of Co<sub>3</sub>O<sub>4</sub>, but it also provides a new insight on the design of OER/ORR bifunctional electrocatalysts for efficient energy conversion.https://www.mdpi.com/1420-3049/28/5/2221iron-cobalt bimetallic oxidessurface vulcanisationN/S co-doped grapheneoxygen evolution reactionoxygen reduction reactionbifunctional electrocatalyst |
| spellingShingle | Lingxue Meng Yige Wang Wenwei Liu Chunlei Fan Haoxiong Nan Jiang Wang Jia Yu Mesoporous Surface-Sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> Nanosheets Integrated with N/S Co-Doped Graphene as a Robust Bifunctional Electrocatalyst for Oxygen Evolution and Reduction Reactions Molecules iron-cobalt bimetallic oxides surface vulcanisation N/S co-doped graphene oxygen evolution reaction oxygen reduction reaction bifunctional electrocatalyst |
| title | Mesoporous Surface-Sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> Nanosheets Integrated with N/S Co-Doped Graphene as a Robust Bifunctional Electrocatalyst for Oxygen Evolution and Reduction Reactions |
| title_full | Mesoporous Surface-Sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> Nanosheets Integrated with N/S Co-Doped Graphene as a Robust Bifunctional Electrocatalyst for Oxygen Evolution and Reduction Reactions |
| title_fullStr | Mesoporous Surface-Sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> Nanosheets Integrated with N/S Co-Doped Graphene as a Robust Bifunctional Electrocatalyst for Oxygen Evolution and Reduction Reactions |
| title_full_unstemmed | Mesoporous Surface-Sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> Nanosheets Integrated with N/S Co-Doped Graphene as a Robust Bifunctional Electrocatalyst for Oxygen Evolution and Reduction Reactions |
| title_short | Mesoporous Surface-Sulfurized Fe–Co<sub>3</sub>O<sub>4</sub> Nanosheets Integrated with N/S Co-Doped Graphene as a Robust Bifunctional Electrocatalyst for Oxygen Evolution and Reduction Reactions |
| title_sort | mesoporous surface sulfurized fe co sub 3 sub o sub 4 sub nanosheets integrated with n s co doped graphene as a robust bifunctional electrocatalyst for oxygen evolution and reduction reactions |
| topic | iron-cobalt bimetallic oxides surface vulcanisation N/S co-doped graphene oxygen evolution reaction oxygen reduction reaction bifunctional electrocatalyst |
| url | https://www.mdpi.com/1420-3049/28/5/2221 |
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