Highly efficient organic-inorganic poly(3,4-ethylenedioxythiophene)-molybdenum trioxide nanocomposite electrodes for electrochemical supercapacitor

Vadivel Murugan, A. ; Viswanath, Annamraju Kasi ; Gopinath, Chinnakonda S. ; Vijayamohanan, K. (2006) Highly efficient organic-inorganic poly(3,4-ethylenedioxythiophene)-molybdenum trioxide nanocomposite electrodes for electrochemical supercapacitor Journal of Applied Physics, 100 (7). 074319_1-074319_5. ISSN 0021-8979

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Official URL: http://jap.aip.org/resource/1/japiau/v100/i7/p0743...

Related URL: http://dx.doi.org/10.1063/1.2356788

Abstract

In this paper, we report a highly efficient organic-inorganic nanocomposite electrode with enhanced double layer capacitance, which has been synthesized using 3,4-ethylenedioxythiophene and crystalline molybdenum trioxide (MoO3) in the presence of an external oxidizing agent. The interlayer spacing of MoO3 upon intercalation expands from 6.93 to 13.46 Å and is followed by an exfoliation and restacking process. The resulting nanocomposite is characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, x-ray photoelectron spectroscopy, and four probe conductivity measurements. The application potential of this nanocomposite as an electrode material for electrochemical supercapacitors has been investigated, highlighting the unusual enhancement of double layer capacitance of poly(3,4-ethylenedioxythiphene) (PEDOT-MoO3) nanocomposites ( ~300 F g−1) compared to that of pristine MoO3 (~40 mF g−1). The improved electrochemical performance is attributed to the intercalation of electronically conducting PEDOT between MoO3 layers with enhanced bidimensionality and an increase in the surface area.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Conducting Polymers; Nanocomposites; Electrochemical Electrodes; Supercapacitors; Molybdenum Compounds; Intercalation Compounds; X-ray Diffraction; Scanning Electron Microscopy; Transmission Electron Microscopy; X-ray Photoelectron Spectra; Electrical Conductivity; Organic Semiconductors; Organic-inorganic Hybrid Materials
ID Code:61899
Deposited On:15 Sep 2011 12:14
Last Modified:05 Jan 2012 10:42

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