Exceptional electrochemical performance of nitrogen-doped porous carbon for lithium storage |
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| Affiliation: | 1. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China;2. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Ji''nan 250061, Shandong, China;2. College of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, United Kingdom;3. School of Chemical Engineering, The University of Adelaide, SA 5005, Australia;4. Shenzhen Research Institute of Shandong University, Shenzhen 518057, Guangdong, China;1. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi’an Jiaotong University, No.28, Xianning West Road, Xi’an, Shaanxi, 710049, PR China;2. Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, Xi’an Jiaotong University, No.28, Xianning West Road, Xi’an, Shaanxi, 710049, PR China;1. Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China;2. College of Materials Science and Engineering, Donghua University, Shanghai 201620, China;3. Department of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA;4. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China;1. School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-713, Republic of Korea;2. Center of Excellence for Research in Engineering Materials, Advanced Manufacturing Institute, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia |
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| Abstract: | Crumpled nitrogen-doped porous carbon sheets are successfully fabricated via chemical activation of polypyrrole-functionalized graphene sheets with KOH (APGs). The obtained APGs with nitrogen doping, high surface area, porous and crumpled structure exhibit exceptional electrochemical performances as the electrode material for LIBs, including a superhigh reversible specific capacity of 1516.2 mAh g−1, excellent cycling stability over 10,000 cycles, and good rate capability (133.2 mAh g−1 even at a very high current density of 40 A g−1). The chemical activation synthesis strategy might open new avenues for the design of high-performance carbon-based anode materials. |
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