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题名: Nitrogen-Superdoped 3D Graphene Networks for High-Performance Supercapacitors
作者: Zhang, Weili;  Xu, Chuan;  Ma, Chaoqun;  Li, Guoxian;  Wang, Yuzuo;  Zhang, Kaiyu;  Li, Feng;  Liu, Chang;  Cheng, Hui-Ming;  Du, Youwei;  Tang, Nujiang;  Ren, Wencai
发表日期: 2017-9-27
摘要: An N-superdoped 3D graphene network structure with an N-doping level up to 15.8 at% for high-performance supercapacitor is designed and synthesized, in which the graphene foam with high conductivity acts as skeleton and nested with N-superdoped reduced graphene oxide arogels. This material shows a highly conductive interconnected 3D porous structure (3.33 S cm(-1)), large surface area (583 m(2) g(-1)), low internal resistance (0.4 Omega ), good wettability, and a great number of active sites. Because of the multiple synergistic effects of these features, the supercapacitors based on this material show a remarkably excellent electrochemical behavior with a high specific capacitance (of up to 380, 332, and 245 F g(-1) in alkaline, acidic, and neutral electrolytes measured in three-electrode configuration, respectively, 297 F g(-1) in alkaline electrolytes measured in two-electrode configuration), good rate capability, excellent cycling stability (93.5% retention after 4600 cycles), and low internal resistance (0.4 Omega), resulting in high power density with proper high energy density.
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Recommended Citation:
Zhang, Weili,Xu, Chuan,Ma, Chaoqun,et al. Nitrogen-superdoped 3d Graphene Networks For High-performance Supercapacitors[J]. Wiley-v C H Verlag Gmbh,2017,29(36):-.

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