TY - JOUR
T1 - Heteroatom-Doped Porous Carbon Nanosheets
T2 - General Preparation and Enhanced Capacitive Properties
AU - Hao, Xiaodong
AU - Wang, Jie
AU - Ding, Bing
AU - Shen, Laifa
AU - Xu, Yunling
AU - Wang, Ya
AU - Chang, Zhi
AU - Dou, Hui
AU - Lu, Xiangjun
AU - Zhang, Xiaogang
N1 - Funding Information:
This work was supported by the National Key Basic Research Program of China (973 Program) (No. 2014CB239701), National Natural Science Foundation of China (No. 51372116), Natural Science Foundation of Jiangsu Province (BK20151468, BK2011030), the Fundamental Research Funds for the Central Universities of NUAA (NJ20160104), National Natural Science Foundation of China (No. 51407034), and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
Publisher Copyright:
© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2016/11/7
Y1 - 2016/11/7
N2 - 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.
AB - 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.
KW - carbon
KW - doping
KW - molten-salt activation
KW - nanostructures
KW - supercapacitors
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U2 - 10.1002/chem.201602922
DO - 10.1002/chem.201602922
M3 - Article
AN - SCOPUS:84993929630
SN - 0947-6539
VL - 22
SP - 16668
EP - 16674
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 46
ER -