Rapid and controllable synthesis of nitrogen doped reduced graphene oxide using microwave-assisted hydrothermal reaction for high power-density supercapacitors |
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| Affiliation: | 1. Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 100-715, Republic of Korea;2. Department of Chemistry, Dongguk University-Seoul, Seoul 100-715, Republic of Korea;3. Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, Incheon 402-751, Republic of Korea;1. Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China;2. School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206, PR China;1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China;2. State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;3. School of Materials Science and Engineering, University of Jinan, Jinan 250022, China;4. State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;1. Centre for Fuel Cell Technology, ARCI, 2ndFloor, IITM Research Park, Taramani, Chennai 600113, India;2. Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India;1. College of Materials and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, Jiangsu, People’s Republic of China;2. Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing 211100, Jiangsu, People’s Republic of China |
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| Abstract: | Nitrogen doped reduced graphene oxide (N-RGO) is synthesized using microwave-assisted hydrothermal (MAHA) reaction. The proper configurations of nitrogen atoms in graphene sheets considerably increase the intrinsic electrical properties of N-RGO resultantly improving its capacitance and other kinetic properties in supercapacitor. Here, under the controlled MAHA reaction, we adjusted the ratio of nitrogen configurations (pyridinic-N, pyrrolic-N and quaternary-N) for the most optimum supercapacitor performances of N-RGOs in the shortest time ever reported, and clarified that its enhanced electrical conductivity and supercapacitor performances are attributed to its enlarged concentration of quaternary-N. With this MAHA reaction, we present a supercapacitor based on N-RGO, which is capable of displaying the promising electrochemical properties. |
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