Three dimensional heteroatom-doped carbon composite film for flexible solid-state supercapacitors
Three dimensional (3D) heteroatom-doped active carbon as a flexible supercapacitor electrode is explored with a starting material of silkworm fibers and low molecular weight phenol resin composite. The silk fiber offers a 3D interconnected network and high content of oxygen and nitrogen functionalit...
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Published in | RSC advances Vol. 6; no. 6; pp. 4483 - 4489 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
01.01.2016
|
Subjects | |
Online Access | Get full text |
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Summary: | Three dimensional (3D) heteroatom-doped active carbon as a flexible supercapacitor electrode is explored with a starting material of silkworm fibers and low molecular weight phenol resin composite. The silk fiber offers a 3D interconnected network and high content of oxygen and nitrogen functionalities, leading to a unique hierarchical structure and a high performance of the electrode. The combination of phenolic resin with silk fibers increases mechanical robustness and specific capacitance of the composite. The porous carbon composite electrode shows a high gravimetric specific capacitance of 239 F g
−1
and areal specific capacitance of 637 mF cm
−2
at a current density of 0.57 A g
−1
. The flexible solid-state supercapacitor assembled with two electrodes in Na
2
SO
4
/PVA gel electrolyte exhibits an energy density of 17.2 W h kg
−1
at a power density of 207 W kg
−1
. The capacitance retention of 116% after 10 000 charge-discharge cycles over a voltage range of 1.6 V illustrates the excellent cyclic stability of the supercapacitors and indicates great potential applications for energy storage devices.
Three dimensional (3D) heteroatom-doped active carbon as a flexible supercapacitor electrode is explored with a starting material of silkworm fibers and low molecular weight phenol resin composite. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/c5ra20525e |