title: Heteroatom-Doped Porous Carbon Nanosheets: General Preparation and Enhanced Capacitive Properties.
abstract: High-performance electrical double-layer capacitors (EDLCs) require carbon electrode materials with high specific surface area, short ion-diffusion pathways, and outstanding electrical conductivity. Herein, a general approach combing the molten-salt method and chemical activation to prepare N-doped carbon nanosheets with high surface area (654 m2g-1) and adjustable porous structure is presented. Owing to their structural features, the N-doped carbon nanosheets exhibited superior capacitive performance, demonstrated by a maximum capacitance of 243 F g-1(area-normalized capacitance up to 37 μF cm-2) at a current density of 0.5 A g-1in aqueous electrolyte, high rate capability (179 F g-1at 20 A g-1), and excellent cycle stability. This method provides a new route to prepare porous and heteroatom-doped carbon nanosheets for high-performance EDLCs, which could also be extended to other polymer precursors and even waste biomass.
authors.affiliation: 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.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Hao
authors.affiliation: 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.
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
authors.affiliation: 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.
authors.forename: Bing
authors.initials: B
authors.lastname: Ding
authors.affiliation: 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.
authors.forename: Laifa
authors.initials: L
authors.lastname: Shen
authors.affiliation: 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.
authors.forename: Yunling
authors.initials: Y
authors.lastname: Xu
authors.affiliation: 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.
authors.forename: Ya
authors.initials: Y
authors.lastname: Wang
authors.affiliation: 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.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Chang
authors.affiliation: 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.
authors.forename: Hui
authors.initials: H
authors.lastname: Dou
authors.affiliation: School of Material Science and Engineering, Xiamen University of Technology, Xiamen, 361024, P.R. China.
authors.forename: Xiangjun
authors.initials: X
authors.lastname: Lu
authors.affiliation: 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. azhangxg@nuaa.edu.cn.
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Zhang
keywords: carbon; doping; molten-salt activation; nanostructures; supercapacitors