Energy, Environmental, and Catalysis Applications
- Lei Wang
Lei Wang
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
More by Lei Wang
- Xuan Liu
Xuan Liu
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
More by Xuan Liu
- Mengting Huang
Mengting Huang
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
More by Mengting Huang
- Yun Han
Yun Han
School of Engineering and Built Environment, Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan Campus, Brisbane, Queensland 4111, Australia
More by Yun Han
- Panjie Guo
Panjie Guo
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
More by Panjie Guo
- Run Huang
Run Huang
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
More by Run Huang
- Ying Chen
Ying Chen
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
More by Ying Chen
- Helong Wu
Helong Wu
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
More by Helong Wu
- Jinyan Zhang
Jinyan Zhang
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
More by Jinyan Zhang
- Shuangming Chen
Shuangming Chen
National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China
More by Shuangming Chen
- Aijun Du
Aijun Du
School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology, Brisbane, QLD 4000, Australia
More by Aijun Du
- Xin Wang*
Xin Wang
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
*Email: [emailprotected]
More by Xin Wang
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ACS Applied Materials & Interfaces
Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX
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https://pubs.acs.org/doi/10.1021/acsami.5c01475
Published April 24, 2025
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Seawater electrocatalysis is highly desired for various energy storage and conversion systems, such as water splitting using seawater as an electrolyte and metal fuel cells. However, the adsorption of chloride ions (Cl–) on the active sites of cathodes would worsen the oxygen reduction reaction (ORR) activity and stability, thus lowering the battery performance. Herein, the coupling active sites of graphitic N-regulated adjacent pentagon defects in carbon nanosheets (GAP/CN) were first synthesized by a low-boiling-point metal-mediated partial N-removal strategy. Experimental and theoretical results affirm the advantageous cooperative effect between adjacent pentagons and graphitic N toward the ORR in a harsh seawater environment, where adjacent pentagons act as the authentic highly effective ORR active sites and surrounding graphitic N site serves as the structural regulator to weaken the binding strength of harmful Cl– to prevent catalyst poisoning. As a result, GAP/CN delivers excellent ORR activities in diverse electrolytes, including 0.1 M KOH (half-wave potential of 0.87 V), alkaline artificial seawater (half-wave potential of 0.87 V), and natural seawater (half-wave potential of 0.71 V), and also good long-term stability, which can be comparable to commercial Pt/C. This study provides valuable guidance for the rational design of ORR electrocatalysts for seawater-related energy-conversion devices.
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- Catalysts
- Defects
- Electrolytes
- Redox reactions
- Seawater
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ACS Applied Materials & Interfaces
Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX
Click to copy citationCitation copied!
Published April 24, 2025
Publication History
Received
Accepted
Revised
Published
online
© 2025 American Chemical Society
Request reuse permissions
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