Preparation and electrochemical behaviors of styrene–acrylonitrile-based porous carbon electrodes

It is described the N2 adsorption/desorption isotherms of A-SANs and N-SANs at 77K. •The porous carbon materials are prepared from styrene–acrylonitrile (SAN) carbon precursors.•A-SANs are prepared with chemical activation using KOH with different temperatures.•N-SANs are prepared by doping of nitro...

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Bibliographic Details
Published in:Electrochimica acta 2013-12, Vol.113, p.23-28
Main Authors: Lee, Ji-Han, Kim, Ick-Jun, Park, Soo-Jin
Format: Article
Language:English
Subjects:
Activated
Activation analysis
Capacitance
Carbon
Chemical activation
Electric double-layer capacitors (EDLC)
Electrochemical analysis
Electrochemical properties
Electrodes
Nitrogen functional group
Precursors
Styrene acrylonitrile resins
Styrene–acrylonitrile (SAN)
Surface chemistry
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Summary:It is described the N2 adsorption/desorption isotherms of A-SANs and N-SANs at 77K. •The porous carbon materials are prepared from styrene–acrylonitrile (SAN) carbon precursors.•A-SANs are prepared with chemical activation using KOH with different temperatures.•N-SANs are prepared by doping of nitrogen onto A-SANs with different temperatures.•N-SAN 700 shows increased specific capacitance compared to the others.•It is due to the combination effect by high specific surface area and nitrogen group. In this work, porous carbon materials were prepared from styrene–acrylonitrile (SAN) carbon precursors. These precursors were chemically activated with KOH; activation was carried out at different temperatures to investigate the effect of thermal treatment on the surface and electrochemical properties of the activated materials (A-SAN). Furthermore, nitrogen was doped into the A-SAN materials to evaluate the influence of nitrogen functional groups on electrochemical properties. A-SAN 700 was found to have the highest specific capacitance; it is likely that the extensive microporous structure of this material contributes to its considerable specific capacitance. Nitrogen doping at temperatures above 700°C yields lower-quality materials, which is thought to be due to deformation of micropore structures.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2013.09.006