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HomeMaterials Science ForumMaterials Science Forum Vol. 846Effect of KOH Treated Graphene in Green Monoliths...

Effect of KOH Treated Graphene in Green Monoliths of Pre-Carbonized Biomass Fibers on the Structure, Porosity and Capacitance of Supercapacitors Carbon Electrodes

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Abstract:

Activated carbon monoliths (ACMs) electrodes for supercapacitor application were prepared from the green monoliths (GMs) containing KOH treated self-adhesive carbon grains (SACG) added with KOH treated graphene at its weight percentages of 0, 2, 4, 6, 8 and 10 %, respectively. The SACG were prepared from fibers of oil palm empty fruit bunches by a low carbonization temperature method. The ACMs were produced by the carbonization and activation of the GMs. The surface area, structure and specific capacitance of the ACMs electrodes were found affected by the graphene addition. The highest surface area of the ACMs electrode was observed for the addition of 6% graphene, which corresponds to the carbon turbostratic structure of the ACMs electrodes with the values of its crystallites interlayers spacing (d₀₀₂and d₁₀₀) at 0.352 nm and 0.205 nm, and its crystallites stack-width (L_a) and stack-height (L_c) at 43.21 nm and 10.06 nm, respectively. The specific capacitance of the cell using this electrode was 112 F / g.

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Materials Science Forum (Volume 846)

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551-558

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https://doi.org/10.4028/www.scientific.net/MSF.846.551

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Online since:

March 2016

Authors:

Mohamad Redwani Mohd Jasni*, Mohamad Deraman, Ellisa Hamdan, Noor Ezniera Shafieza Sazali, Najah Syahirah Mohd Nor, Maria Muhammad Ishak, Nur Hamizah Basri, Ramli Omar, Mohd Amir Radhi Othman, Roslinda Zulkifli, Rusli Daik, Mohd Suleman

Keywords:

Activated Carbon Electrodes, Biomass Fibers, Energy Storage, Graphene, Porosity, Structure, Supercapacitor

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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