Document Type

Graduate Research

Publication Date

Spring 4-2016

Abstract

Graphene has attracted considerable research interest in different fields of research due to its unique properties such as high electrical conductivity, good mechanical flexibility, and high thermal and chemical stability. These unique properties make them very suitable for energy related applications such as fuel cells, supercapacitors etc. In this work, we have fabricated nanoribbons of graphene oxide by chemical oxidation of multiwall carbon nanotubes. The synthesized graphene nanoribbons were structurally and electrochemically characterized. The shift of (002) peak in graphene nanoribbons compare to MWCNT confirms unzipping of MWCNT and its exfoliation. MWCNT and graphene nanoribbons were electrochemically characterized using cyclic voltammetry and galvanostatic charge-discharge methods. Cyclic voltammetry was performed at various scan rates to understand the charge transport mechanism. The specific capacitance of the graphene nanoribbons decreases with increasing scan rate. The overall charge storage capacity of the graphene nanoribbons was higher than that of MWCNT. The higher charge storage capacity of graphene nanoribbons is due to enhance surface area. We are in process to synthesize and characterize the nanocomposites of graphene nanoribbons and polyaniline for their possible application as an electrode material for supercapacitors.

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Chemistry Commons

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