High-efficiency capacitance performance from foam-like MnO2/polyaniline/carbon nanotube film hybrids

Yan Zhang, Weiwei Du, Min Peng

Abstract


Flexible supercapacitor electrode materials based on carbon nanotube film have been successfully fabricated. Honeylike M nO2/polyaniline/Carbon nanotube fi lm hybrids (MnO2/PANI/CNTF) were manufactured via chemical oxidation polymerization and solution chemical reduction method. All electrochemical tests were carried out in a 1 M Na2SO4 electrolyte at a window voltage of -0.2-
0.8 V. The structures and morphology of the hybrids are characterized by scanning electron microscopy (SEM), transmission electron
microscopy (TEM). Raman spectroscopy and X-ray photoelectron spectrometer (XPS). The electrochemical performance was examined by
cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD). MnO2/PANI/CNTF hybrids exhibit a specifi c capacitance of 186 F/g at
a current density of 1 A/g, which is much higher than of pure CNTF (20 F/g). After 1000 cycles, the capacitance was reduced by only 9 %
compare to 15 % for PANI/CNTF hybrids and 19% for MnO2 /CNTF.

Keywords


carbon nanotube fi lm; fl exible; hybrids; PANI; MnO2; supercapacitor

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References


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DOI: https://doi.org/10.18686/esta.v10i1.337

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