Cobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H2O2
Electrochemical production of hydrogen peroxide (H _2 O _2 ) from oxygen reduction reaction (ORR) is a promising alternative to the costly anthraquinone method. However, the sluggish kinetics of ORR on most electrocatalysts restricts its wide application. Therefore, exploring electrocatalysts with h...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | JPhys Energy |
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| Online Access: | https://doi.org/10.1088/2515-7655/acbabc |
| _version_ | 1797844582354911232 |
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| author | Xiao Huang Jingjing Zhang Guanyu Luo Deli Wang |
| author_facet | Xiao Huang Jingjing Zhang Guanyu Luo Deli Wang |
| author_sort | Xiao Huang |
| collection | DOAJ |
| description | Electrochemical production of hydrogen peroxide (H _2 O _2 ) from oxygen reduction reaction (ORR) is a promising alternative to the costly anthraquinone method. However, the sluggish kinetics of ORR on most electrocatalysts restricts its wide application. Therefore, exploring electrocatalysts with high activity and selectivity for two–electron ORR is significant. Herein, cobalt atoms anchored on nitrogen-doped hollow carbon spheres (Co–NHCS) are presented for H _2 O _2 electrosynthesis. The Co–NHCS catalyst exhibits excellent H _2 O _2 electrosynthesis performance in acidic media with high reactivity with an ORR potential of 0.581 V at 1.0 mA cm ^−2 and H _2 O _2 selectivity up to 90%. Moreover, the H _2 O _2 output in the assembled device reaches 2980 mg l ^−1 h ^−1 with high Faraday efficiency. The enhanced performance of Co–NHCS originates from the hollow structure and center sites of Co introduction. This work affords a facile strategy for the fabrication of high-efficient carbon-based materials for H _2 O _2 electrosynthesis. |
| first_indexed | 2024-04-09T17:25:39Z |
| format | Article |
| id | doaj.art-2a7c4c9a5dae4592bb46ee2d95775581 |
| institution | Directory Open Access Journal |
| issn | 2515-7655 |
| language | English |
| last_indexed | 2024-04-09T17:25:39Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | JPhys Energy |
| spelling | doaj.art-2a7c4c9a5dae4592bb46ee2d957755812023-04-18T13:50:56ZengIOP PublishingJPhys Energy2515-76552023-01-015202500110.1088/2515-7655/acbabcCobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H2O2Xiao Huang0Jingjing Zhang1Guanyu Luo2Deli Wang3https://orcid.org/0000-0003-2023-6478Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, People’s Republic of ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, People’s Republic of ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, People’s Republic of ChinaKey Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology), Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, People’s Republic of ChinaElectrochemical production of hydrogen peroxide (H _2 O _2 ) from oxygen reduction reaction (ORR) is a promising alternative to the costly anthraquinone method. However, the sluggish kinetics of ORR on most electrocatalysts restricts its wide application. Therefore, exploring electrocatalysts with high activity and selectivity for two–electron ORR is significant. Herein, cobalt atoms anchored on nitrogen-doped hollow carbon spheres (Co–NHCS) are presented for H _2 O _2 electrosynthesis. The Co–NHCS catalyst exhibits excellent H _2 O _2 electrosynthesis performance in acidic media with high reactivity with an ORR potential of 0.581 V at 1.0 mA cm ^−2 and H _2 O _2 selectivity up to 90%. Moreover, the H _2 O _2 output in the assembled device reaches 2980 mg l ^−1 h ^−1 with high Faraday efficiency. The enhanced performance of Co–NHCS originates from the hollow structure and center sites of Co introduction. This work affords a facile strategy for the fabrication of high-efficient carbon-based materials for H _2 O _2 electrosynthesis.https://doi.org/10.1088/2515-7655/acbabcelectrosynthesishydrogen peroxideoxygen reduction reactioncarbon-based materials |
| spellingShingle | Xiao Huang Jingjing Zhang Guanyu Luo Deli Wang Cobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H2O2 JPhys Energy electrosynthesis hydrogen peroxide oxygen reduction reaction carbon-based materials |
| title | Cobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H2O2 |
| title_full | Cobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H2O2 |
| title_fullStr | Cobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H2O2 |
| title_full_unstemmed | Cobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H2O2 |
| title_short | Cobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H2O2 |
| title_sort | cobalt atoms anchored on nitrogen doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to h2o2 |
| topic | electrosynthesis hydrogen peroxide oxygen reduction reaction carbon-based materials |
| url | https://doi.org/10.1088/2515-7655/acbabc |
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