Polyaniline/carbon nanotube nanocomposite electrodes with biomimetic hierarchical structure for supercapacitors

Polyaniline (PANI)/multi-walled carbon nanotube (MWNT) nanocomposite films with three-dimensional architectures on the surface were prepared using fresh plant leaves as a template through the nanocasting technique. The biomimetic surface morphology of the PANI nanocomposite electrodes, including mul...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2013-01, Vol.1 (46), p.14719-14728
Main Authors: Chang, Cheng-Ming, Weng, Chang-Jian, Chien, Chao-Ming, Chuang, Tsao-Li, Lee, Ting-Yin, Yeh, Jui-Ming, Wei, Yen
Format: Article
Language:English
Subjects:
Capacitance
Current density
Electrodes
Morphology
Multi wall carbon nanotubes
Nanostructure
Roughness
Texture
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Summary:Polyaniline (PANI)/multi-walled carbon nanotube (MWNT) nanocomposite films with three-dimensional architectures on the surface were prepared using fresh plant leaves as a template through the nanocasting technique. The biomimetic surface morphology of the PANI nanocomposite electrodes, including multiscale papilla-like and nanoscale texture, were successfully replicated from Xanthosoma sagittifoliumleaves. The morphology, roughness and dispersed MWNTs of the PANI/MWNT nanocomposites were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and atomic force microscopy. It was found that the well-dispersed MWNTs and the multiscale morphology formed a uniform nanocomposite, with an observed larger surface area, high specific capacitance and good cycling stability during the charge-discharge process. A specific capacitance as high as 535 F g super(-1) at a current density of 1 A g super(-1) was achieved for a 5 wt% MWNT loading coupled with the high roughness of the PANI nanocomposite, and the capacitance was maintained with the increment of the current density to 3 A g super(-1). These easily fabricated PANI nanocomposite electrodes show great potential for energy storage applications.
ISSN:2050-7488
2050-7496
DOI:10.1039/c3ta13758a