Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28356
Title: Assembly of polypyrrole nanotube@MnO2 composites with an improved electrochemical capacitance
Authors: Ji, J
Zhang, X
Liu, J
Peng, L
Chen, C
Huang, Z
Li, L
Yu, X
Shang, S 
Keywords: Capacitance
Composites
MnO2
Polypyrrole
Issue Date: 2015
Publisher: Elsevier
Source: Materials science and engineering. B, Solid-state materials for advanced technology, 2015, v. 198, p. 51-56 How to cite?
Journal: Materials science and engineering. B, Solid-state materials for advanced technology 
Abstract: A facile strategy is presented to fabricate polypyrrole nanotube@manganese dioxide (PPy@MnO2) composites. The effect of KMnO4 concentration on the morphology and property of PPy@MnO2 composites is investigated. The microstrucutres and properties of the resulting PPy@MnO2 composites are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray diffraction (EDX), X-ray diffraction (XRD), thermo-gravimetric analysis (TGA) and electrochemical measurements. The results indicate that the PPy@MnO2 composites possess high specific capacitance and good cyclic stability due to the coating of MnO2 onto PPy nanotubes. The specific capacitance of 403 F/g for the PPy@MnO2 composite is obtained from galvanostatic charge-discharge experiment at a current density of 1 A/g, exhibiting the potential application for supercapacitors.
URI: http://hdl.handle.net/10397/28356
ISSN: 0921-5107
DOI: 10.1016/j.mseb.2015.04.004
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