Porous Nitrogen‐Doped Carbon Microspheres Derived from Microporous Polymeric Organic Frameworks for High Performance Electric Double‐Layer Capacitors |
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| Authors: | Jinpeng Han Guiyin Xu Prof. Hui Dou Prof. Dr. Douglas R. MacFarlane |
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| Affiliation: | 1. Jiangsu Key Laboratory of Material and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016 (P.R. China), Fax: (+86)?025‐52112918;2. Australian Centre for Electromaterials Science, Monash University, Clayton, Victoria 3800 (Australia), Fax: (+61)?3‐99054597 |
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| Abstract: | This research presents a simple and efficient method to synthesize porous nitrogen‐doped carbon microspheres (PNCM) by the carbonization of microporous poly(terephthalaldehyde‐pyrrole) organic frameworks (PtpOF). The common KOH activation process is used to tune the porous texture of the PNCM and produce an activated‐PNCM (A‐PNCM). The PNCM and A‐PNCM with specific surface area of 921 and 1303 m2 g?1, respectively, are demonstrated as promising candidates for EDLCs. At a current density of 0.5 A g?1, the specific capacitances of the PNCM and A‐PNCM are 248 and 282 F g?1, respectively. At the relatively high current density of 20 A g?1, the capacitance remaining is 95 and 154 F g?1, respectively. Capacity retention of the A‐PNCM is more than 92 % after 10 000 charge/discharge cycles at a current density of 2 A g?1. |
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| Keywords: | energy storage nitrogen doping POF porous carbon supercapacitors |
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