Issue 63, 2014

MnO2-assisted fabrication of PANI/MWCNT composite and its application as a supercapacitor

Abstract

Manganese dioxide (MnO2) has been used as a sacrificial template to fabricate a polyaniline/multi-walled carbon nanotube (PANI/MWCNT) composite with core–shell structure through a facile route. The as-synthesized samples have been characterized by Raman spectra, Fourier transform infrared spectra, field emission scanning electron microscopy and transmission electron microscopy for their microstructure and morphology. A series of electrochemical measurements have been performed to study the effects of microstructure and morphology of the samples on their capacitive performance. The results indicate that the as-prepared PANI/MWCNT composite with a core–shell structure provides fast ionic channels for electrochemical energy storage. A maximum specific capacitance of 764 F g−1 can be achieved from the hybrid at a current density of 0.25 A g−1, and a fairly good value of 509 F g−1 can be obtained even at a higher current density of 3 A g−1.

Graphical abstract: MnO2-assisted fabrication of PANI/MWCNT composite and its application as a supercapacitor

Article information

Article type
Paper
Submitted
24 5 2014
Accepted
16 7 2014
First published
04 8 2014

RSC Adv., 2014,4, 33569-33573

Author version available

MnO2-assisted fabrication of PANI/MWCNT composite and its application as a supercapacitor

F. Yang, M. Xu, S. Bao and Q. Sun, RSC Adv., 2014, 4, 33569 DOI: 10.1039/C4RA04905E

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