Accelerating water dissociation to achieve ampere-level hydrogen peroxide electrosynthesis in brine and seawater
Abstract Ampere-level hydrogen peroxide (H2O2) electrosynthesis in brine and seawater via two-electron oxygen reduction reaction (2e− ORR) is promising, but limited by the slow water dissociation and insufficient protons in neutral media. Hence, we design a multifunctional Ni(OH)2 nanoplates anchore...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-60950-8 |
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| _version_ | 1849238552013963264 |
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| author | Jiahuan Nie Qiao Jiang Zhiyuan Sang Min Zheng Zhenxin Li Wei Liu De’an Yang Yao Zheng Lichang Yin Feng Hou Xiao Yan Ji Liang |
| author_facet | Jiahuan Nie Qiao Jiang Zhiyuan Sang Min Zheng Zhenxin Li Wei Liu De’an Yang Yao Zheng Lichang Yin Feng Hou Xiao Yan Ji Liang |
| author_sort | Jiahuan Nie |
| collection | DOAJ |
| description | Abstract Ampere-level hydrogen peroxide (H2O2) electrosynthesis in brine and seawater via two-electron oxygen reduction reaction (2e− ORR) is promising, but limited by the slow water dissociation and insufficient protons in neutral media. Hence, we design a multifunctional Ni(OH)2 nanoplates anchored on carbon nanotubes (CNTs) as 2e− ORR catalyst towards H2O2 electrosynthesis, where Ni(OH)2 nanoplates accelerate water dissociation and proton transfer, resolving the critical proton shortage for H2O2 formation. Combined with exceptional chloride tolerance and suppressed hydrogen evolution, the catalyst achieves a high H2O2 yield of 141 mol g−1 h−1 (14.1 mmol cm−2 h−1) at 1 A cm−2 and a long operation time over 150 h at 200 mA cm−2 in 1 M NaCl solution with >80% H2O2 selectivity. In natural seawater, it achieves a Faraday efficiency over 70% at 100 mA cm−2. This work enables water purification/disinfection via simultaneous H2O2/active chlorine production, bridging electrosynthesis with environmental remediation. |
| format | Article |
| id | doaj-art-70b5c236ea1441d89900acd65d25e4a1 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-70b5c236ea1441d89900acd65d25e4a12025-08-20T04:01:35ZengNature PortfolioNature Communications2041-17232025-07-0116111110.1038/s41467-025-60950-8Accelerating water dissociation to achieve ampere-level hydrogen peroxide electrosynthesis in brine and seawaterJiahuan Nie0Qiao Jiang1Zhiyuan Sang2Min Zheng3Zhenxin Li4Wei Liu5De’an Yang6Yao Zheng7Lichang Yin8Feng Hou9Xiao Yan10Ji Liang11Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin UniversityKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin UniversityKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin UniversitySchool of Chemical Engineering, The University of AdelaideKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin UniversityKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin UniversityKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin UniversitySchool of Chemical Engineering, The University of AdelaideShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of ScienceKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin UniversityInstitute of Technology for Future Industry, Shenzhen Institute of Information TechnologyKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and Engineering, Tianjin UniversityAbstract Ampere-level hydrogen peroxide (H2O2) electrosynthesis in brine and seawater via two-electron oxygen reduction reaction (2e− ORR) is promising, but limited by the slow water dissociation and insufficient protons in neutral media. Hence, we design a multifunctional Ni(OH)2 nanoplates anchored on carbon nanotubes (CNTs) as 2e− ORR catalyst towards H2O2 electrosynthesis, where Ni(OH)2 nanoplates accelerate water dissociation and proton transfer, resolving the critical proton shortage for H2O2 formation. Combined with exceptional chloride tolerance and suppressed hydrogen evolution, the catalyst achieves a high H2O2 yield of 141 mol g−1 h−1 (14.1 mmol cm−2 h−1) at 1 A cm−2 and a long operation time over 150 h at 200 mA cm−2 in 1 M NaCl solution with >80% H2O2 selectivity. In natural seawater, it achieves a Faraday efficiency over 70% at 100 mA cm−2. This work enables water purification/disinfection via simultaneous H2O2/active chlorine production, bridging electrosynthesis with environmental remediation.https://doi.org/10.1038/s41467-025-60950-8 |
| spellingShingle | Jiahuan Nie Qiao Jiang Zhiyuan Sang Min Zheng Zhenxin Li Wei Liu De’an Yang Yao Zheng Lichang Yin Feng Hou Xiao Yan Ji Liang Accelerating water dissociation to achieve ampere-level hydrogen peroxide electrosynthesis in brine and seawater Nature Communications |
| title | Accelerating water dissociation to achieve ampere-level hydrogen peroxide electrosynthesis in brine and seawater |
| title_full | Accelerating water dissociation to achieve ampere-level hydrogen peroxide electrosynthesis in brine and seawater |
| title_fullStr | Accelerating water dissociation to achieve ampere-level hydrogen peroxide electrosynthesis in brine and seawater |
| title_full_unstemmed | Accelerating water dissociation to achieve ampere-level hydrogen peroxide electrosynthesis in brine and seawater |
| title_short | Accelerating water dissociation to achieve ampere-level hydrogen peroxide electrosynthesis in brine and seawater |
| title_sort | accelerating water dissociation to achieve ampere level hydrogen peroxide electrosynthesis in brine and seawater |
| url | https://doi.org/10.1038/s41467-025-60950-8 |
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