Effect of biogas-slurry pyrolysis temperature on specific capacitance

Conference proceedings article

Authors/Editors

King'ondu, Cecil

Research Areas

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Publication Details

Author list: Enock TK, King'ondu CK, Pogrebnoi A

Publisher: Elsevier

Place: AMSTERDAM

Publication year: 2018

Journal: Materials Today: Proceedings (2214-7853)

Journal acronym: MATER TODAY-PROC

Volume number: 5

Issue number: 4

Start page: 10611

End page: 10620

Number of pages: 10

ISSN: 2214-7853

eISSN: 2214-7853

Languages: English-Great Britain (EN-GB)

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Abstract

The purpose of this is study was to investigate the effect of carbonization temperature of biogas slurry on specific capacitance. The biogas derived mesoporous carbon materials were synthesized through carbonization of biogas slurry at 450, 550, and 650 degrees C followed by activation using KOH at 700 degrees C for 1 h. The physical characterization done by nitrogen adsorption and desorption, scanning electron microscope, transmission electron microscope and X-ray diffraction shows that pyrolysis temperature has influence on the textural and structural properties of the biogas slurry derived carbon. BET specific surface area of 567, 521 and 499 m(2) g(-1) were obtained for samples carbonized at 450, 550, and 650 degrees C, respectively. The electrochemical performance of the samples in 6 M KOH electrolyte exhibited high gravimetric capacitance of 262, 272, and 238 F g(-1) for samples carbonized at 450, 550 and 650 degrees C, correspondingly at scan rate of 5 mV s(-1). Moderate carbonization temperature of 550 degrees C therefore afforded the highest capacitance. (C) 2017 Elsevier Ltd. All rights reserved.

Keywords

Biogas slurry, carbonization temperature, mesoporous carbon, Specific capacitance

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