Uniform Coating of Polyaniline on Porous Carbon Nanofibers as Efficient Electrodes for Supercapacitors

Porous activated carbon nanofibers (A-CNFs) are fabricated and considered as promising electrode materials for electrochemical double layer capacitors (EDLCs) due to their free-standing and hierarchical pore structure. They exhibit high specific capacitances in 1 M H2SO4 without any significant loss...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-08, Vol.1082 (1), p.12081
Main Authors: Tran, Chau D, Vu, A.Q, Van Le, Thang
Format: Article
Language:English
Subjects:
Activated carbon
Carbon fibers
Coated electrodes
Electrode materials
Flux density
Nanofibers
Physics
Polyanilines
Structural hierarchy
Sulfuric acid
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Summary:Porous activated carbon nanofibers (A-CNFs) are fabricated and considered as promising electrode materials for electrochemical double layer capacitors (EDLCs) due to their free-standing and hierarchical pore structure. They exhibit high specific capacitances in 1 M H2SO4 without any significant loss at high scan rates. To further enhance charge storage, we incorporated polyaniline onto A-CNFs with the aim to combine the benefits of both EDLCs (high power density) and pseudocapacitors (high energy density). By using a simple galvanostatic deposition, we achieve a uniform coating of polyaniline on A-CNFs. Combination of two different storage mechanisms results in an excellent specific capacitance of 290 F g−1. Cyclic voltammetric measurements show no significant change at scan rates up to 100 mV s−1.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1082/1/012081