NDLI: The synergistic effect achieved by combining different nitrogen-doped carbon shells for high performance capacitance

Content Provider	Royal Society of Chemistry (RSC)
Author	Lin, Yuan Pan, Feng Duan, Yandong Lin, Lingpiao Chen, Haibiao Yang, Jie Hu, Jiangtao Tang, Hanting Liu, Chaokun
Copyright Year	2017
Abstract	Ellipsoid nitrogen-doped hollow carbon shells with different nitrogen contents and electrical conductivities were prepared using a simple calcination method by regulating the calcination temperature. Although a high nitrogen content promotes pseudocapacitance, it reduces the electrical conductivity of carbon, causing loss of capacitance. The best rate performance was achieved by a mixture of two types of ellipsoid nitrogen-doped hollow carbon shells, in which one contains a higher level of nitrogen with lower conductivity and higher pseudocapacitance, while the other contains a relatively lower level of nitrogen with higher conductivity. The enhanced performance can be explained by the synergistic effect of one component providing high pseudocapacitance and the other component serving as a highly electrically conductive network, which leads to activation of “nitrogen” to enhance pseudocapacitance performance. The mixed material showed a specific capacitance of 156.9 F g−1 at a high current density of 10 A g−1, with no degradation after 10 000 cycles.
Starting Page	857
Ending Page	860
Page Count	4
File Format	HTM / HTML PDF
ISSN	13597345
Volume Number	53
Issue Number	5
Journal	Chemical Communications
DOI	10.1039/c6cc09211j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Electrical resistivity and conductivity Calcination Capacitance Nitrogen Ellipsoid Carbon Pseudocapacitance Current density
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Surfaces, Coatings and Films Materials Chemistry Metals and Alloys Electronic, Optical and Magnetic Materials Catalysis

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