9-13 July 2012
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=11&confId=14"><font color=#ff0000>SAIP2012 PROCEEDINGS AVAILABLE</font></a>

Synthesis of a three dimensional graphene network for ultracapacitor application

10 Jul 2012, 17:30
IT Building

IT Building

Poster Presentation Track A - Division for Condensed Matter Physics and Materials Poster Session


Mr Abdulhakeem Bello (Department of Physics, University of Pretoria)

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Abstract content <br> &nbsp; (Max 300 words)

We presents report on the preparation of a three dimensional graphene foam network for use in ultracapacitor application. A graphene foam consist of highly porous interconnected network of graphene with a very high electrical conductivity which make it suitable for ultracapacitor application.
The structure of the prepared graphene samples were investigated using scanning electron microscopy and transmission electron microscopy which revealed the homogeneity of the three dimensional network with very high porosity. The Raman spectra of 3D graphene grown by the thermal decomposition of methane shows an intense 2D-band, a weaker G-band and hardly any D-band, which are clear indication of Single/few Layer Graphene. The absence of the D-peak shows that the graphene samples were of very good quality.
A cell coin was fabricated with the graphene as electrode for electrochemical characterization. The electrochemical performance shows a nearly rectangular CV shape at various scan rate, which is an indication of nearly ideal
capacitive behavior.

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD)?


Main supervisor (name and email)<br>and his / her institution

Ncholu Manyala. ncholu.manyala@up.ac.za

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Primary author

Mr Abdulhakeem Bello (Department of Physics, University of Pretoria)


Dr David Dodoo-Arhin (Department of Physics, University of Pretoria) Mr Fabiane Mopeli (Department of Physics, University of Pretoria) Prof. Manyala Ncholu (Department of Physics, University of Pretoria)

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