Fabrication of Flexible Super Capacitor Using Laser Lightscribe Technique

Super capacitors are promising energy storage devices due to their capability of delivering high peak current and storing high amount of energy in a short time with very low internal power loss. We fabricated the graphene or graphite oxide super-capacitor using laser Lightscribe technique. We prepar...

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Published in:arXiv.org 2014-09
Main Authors: Gladson, Joseph, Kirubaraj, A Alfred, Satheesh, U, Devaprakasam, D
Format: Article
Language:English
Subjects:
Capacitors
Electric potential
Energy storage
Frequency analysis
Frequency response
Graphene
Graphite
High resistance
Impedance measurement
Lasers
Polyethylene terephthalate
Power loss
Substrates
Supercapacitors
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Kirubaraj, A Alfred
Satheesh, U
Devaprakasam, D
description Super capacitors are promising energy storage devices due to their capability of delivering high peak current and storing high amount of energy in a short time with very low internal power loss. We fabricated the graphene or graphite oxide super-capacitor using laser Lightscribe technique. We prepared graphite oxide by modified hummers method and used PET film as a flexible substrate on which graphite oxide (GO) was coated. Using Lightscribe drive and software, the super-capacitor configuration was patterned on the GO coated PET film. During the writing process, the laser converts GO into graphene. We characterized the fabricated flexible super-capacitor which exhibits high resistance of 20KOhm with applied voltage of 10V and further increase of voltage (20V) decreases the resistance to 8KOhm. We also analyzed the frequency response of the capacitor using impedance measurement which shows high frequency response and estimated capacitance is 120nF. We optimized the patterns by running the Lightscribe repeatedly on the GO coated PET substrate.
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subjects Capacitors
Electric potential
Energy storage
Frequency analysis
Frequency response
Graphene
Graphite
High resistance
Impedance measurement
Lasers
Polyethylene terephthalate
Power loss
Substrates
Supercapacitors
title Fabrication of Flexible Super Capacitor Using Laser Lightscribe Technique
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