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Electrode Fabrication and Electrochemical Analysis of AC/Graphene-Based Electrochemical Capacitor in 1 M H2SO4

Mohd Abid, Mohd Asyadi Azam and Abdul Manaf, Nor Syafira and RAJA ABDULLAH, RAJA IZAMSHAH and Mohamad, Noraiham (2014) Electrode Fabrication and Electrochemical Analysis of AC/Graphene-Based Electrochemical Capacitor in 1 M H2SO4. Advanced Science, Engineering and Medicine, 6. pp. 1-4. ISSN 2164-6627

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Abstract

With the development of alternative energy research, the technology of energy storage devices has become crucial. The world is focusing on the advancement of electrochemical capacitors (ECs) or supercapacitors as one of the best energy storage devices. This paper presents the fabrication of ECs using a combination of activated carbon (AC) and graphene as active material and 1M sulfuric acid (H2SO4) as electrolyte. This work also includes analyses of electrochemical characterization such as cyclic voltammetry to obtain the specific capacitance of a device and the charge-discharge of fabricated EC. The results showed that this EC reached a specific gravimetric capacitance of up to 115.5 mF g-1 and a high rate capability, with a scan rate of up to 1,000 mV s-1. The excellent performance can be attributed to the fabrication technique, electrode material physical structures, and the intrinsic conductivity because of the AC/graphene electrode.

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User: Dr Mohd Asyadi 'Azam Bin Mohd Abid
Date Deposited: 19 Nov 2014 02:01
Last Modified: 28 May 2015 04:33
URI: http://eprints.utem.edu.my/id/eprint/13659

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