9-13 July 2012
Africa/Johannesburg timezone
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Synthesis of a three dimensional graphene network for ultracapacitor application

Presented by Mr. Abdulhakeem BELLO on 10 Jul 2012 from 17:30 to 19:30
Type: Poster Presentation
Session: Poster Session
Track: Track A - Division for Condensed Matter Physics and Materials

Abstract

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.

Award

no

Level

PhD

Supervisor

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

Paper

yes

Place

Location: IT Building
Room:


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