Synthesis of polyaniline/MWCNTs by interfacial polymerization for superior hybrid supercapacitance performance

Polyaniline/Multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite was prepared via liquid-liquid interfacial polymerization method. The morphology studies of the nanocomposite using SEM and TEM techniques confirmed the presence of PANI as aggregates along with MWCNTs and X-ray diffraction studies...

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Bibliographic Details
Published in:Journal of polymer research 2018-05, Vol.25 (5), p.1-14, Article 123
Main Authors: Prasanna, B. P., Avadhani, D. N., Chaitra, K., Nagaraju, N., Kathyayini, N.
Format: Article
Language:English
Subjects:
Activated carbon
Capacitance
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry
Chemistry and Materials Science
Electrodes
Industrial Chemistry/Chemical Engineering
Life cycle engineering
Multi wall carbon nanotubes
Nanocomposites
Nanotubes
Original Paper
Polyanilines
Polymer Sciences
Polymerization
Sulfuric acid
X-ray diffraction
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Summary:Polyaniline/Multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite was prepared via liquid-liquid interfacial polymerization method. The morphology studies of the nanocomposite using SEM and TEM techniques confirmed the presence of PANI as aggregates along with MWCNTs and X-ray diffraction studies indicated the presence of graphitic planes of MWCNTs along with PANI in semi-crystalline emeraldine salt form. The PANI/MWCNTs nanocomposite electrode exhibited specific capacitance (Cs) of 1551 F/g at a scan rate of 2 mV/s in aqueous 1 M H 2 SO 4 in a potential window of 0–1.2 V. The material exhibited good cycle life with 95% capacitance retention in a life cycle test conducted at 5 A/g for 1000 cycles. Further, an asymmetric supercapacitor device (ASD) was fabricated using PANI/MWCNTs as positive and activated carbon as negative electrodes in aqueous 1 M H 2 SO 4 . The ASD exhibited a Cs of 142 F/g at a scan rate of 5 mV/s in a wide potential range of 0–1.6 V. The device offered high energy and power densities of 29 Wh/Kg and 7.3 kW/Kg respectively and also demonstrated an excellent cyclic stability by retaining 97% of its initial capacitance after 5000 cycles at high current density of 20 A/g. Graphical abstract Schematic representation of design of asymmetric supercapacitor device, its cycle performance and Ragone plot
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-018-1526-2