Single-Step Synthesis of N-Doped Three-Dimensional Graphitic Foams for High-Performance Supercapacitors

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We present a facile yet efficient single-step pyrolysis method to prepare bulk-scale high-performance N-doped 3D-graphitic foams with various length-scale pores. The iron precursors act as catalysts for the conversion of organic substances to a graphitic structure while simultaneously providing a rigid template that prevents the aggregation of organic components, and soluble polymers act as a carbon source for the formation of N-doped multilayer graphene under high-temperature and inert conditions. The 3D-graphitic foams possess highly interconnected networks composed of micro-, meso-, and macropores with a specific surface area of up to 1509 m(2) g(-1) and a high conductivity of 10 S m(-1). The resulting 3D-graphitic foams exhibited specific capacitance values of 330 and 242 F g(-1) with outstanding cycling stability (a 23% loss after 100 000 cycles for a symmetric cell) in a three-electrode system and in a symmetric cell, respectively, when used as active materials in a supercapacitor. This study suggests the great potential of bulk-scale fabricated N-doped 3D-graphitic foams with a large surface area and excellent conductivity, as well as controlled porosity, for applications in various fields.
Publisher
American Chemical Society
Issue Date
2017-08
Language
English
Article Type
Article
Citation

ACS Sustainable Chemistry and Engineering, v.5, no.8, pp.6950 - 6957

ISSN
2168-0485
DOI
10.1021/acssuschemeng.7b01132
URI
http://hdl.handle.net/10203/226001
Appears in Collection
RIMS Journal Papers
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