Implanting Ni into N-doped puffed carbon: A new advanced electrocatalyst for oxygen evolution reaction |
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| Institution: | 1. Department of Materials Chemistry, Huzhou University, Huzhou 313000, China;2. State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;3. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China;1. College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China;2. Institute of Zhejiang University-Quzhou, Quzhou 324000, China;3. Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China;4. School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;5. Nation & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China;6. Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China;7. Ningbo Research Institute, Zhejiang University, Ningbo 315100, China;1. College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150080, China;2. Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry and College of Chemistry, Jilin University, Changchun 130023, China;3. Beijing National Laboratory for Molecular Sciences (BNLMS), Beijing 100190, China;1. School of Physics and Technology, Center for Ion Beam Application, Center for Electron Microscopy, MOE Key Laboratory of Artificial Micro- and Nano-Structures, Hubei Nuclear Solid Physics Key Laboratory, Wuhan University, Wuhan, 430072, China;2. School of Physics and Engineering, Henan University of Science and Technology, Henan Key Laboratory of Photoelectric Energy Storage Materials and Applications, Luoyang, 471023, Henan, China;3. Department of Physics, School of Science, Jimei University, Xiamen 361021, China;1. State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;2. Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Tailored design and synthesis of high-quality electrocatalysts is vital for the advancement of oxygen evolution reaction (OER). Herein, we report a powerful puffing method to fabricate hierarchical porous N-doped carbon with numerous embedded Ni nanoparticles. Interestingly, during the puffing and annealing process, rice precursor with N and Ni sources can be in-situ converted into Ni-embedded N-doped porous carbon (N-PC/Ni) composite. The obtained N-PC/Ni composite possesses a cross-linked porous architecture containing conductive carbon backbone and active Ni nanoparticles electrocatalysts for OER. The pore formation in N-PC/Ni composite is also proposed because of carbothermic reduction. The N-PC/Ni composite is fully studied as electrocatalysts for OER. Due to increased active surface area, enhanced electronic conductivity and reactivity, the designed N-PC/Ni composite exhibits superior OER performance with a low Tafel slope (∼88 mV/dec) and a low overpotential as well as excellent long-term stability in alkaline solution. Our proposed rational design strategy may provide a new way to construct other advanced metal/heteroatom-doped composites for widespread application in electrocatalysis. |
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| Keywords: | Oxygen evolution reaction Electrocatalysis Porous carbon Metal-carbon composites N doping |
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