LAPSE:2023.26576
Published Article
LAPSE:2023.26576
Modified Activated Graphene-Based Carbon Electrodes from Rice Husk for Supercapacitor Applications
Mukhtar Yeleuov, Christopher Seidl, Tolganay Temirgaliyeva, Azamat Taurbekov, Nicholay Prikhodko, Bakytzhan Lesbayev, Fail Sultanov, Chingis Daulbayev, Serik Kumekov
April 3, 2023
The renewable biomass material obtained from rice husk, a low-cost agricultural waste, was used as a precursor to synthesize a highly porous graphene-based carbon as electrode material for supercapacitors. Activated graphene-based carbon (AGC) was obtained by a two-step chemical procedure and exhibited a very high specific surface area (SSA) of 3292 m2 g−1. The surface morphology of the synthesized materials was studied using scanning and transmission electron microscopy (SEM, TEM). Furthermore, the AGC was modified with nickel hydroxide Ni(OH)2 through a simple chemical precipitation method. It was found that the most significant increase in capacitance could be reached with Ni(OH)2 loadings of around 9 wt.%. The measured specific capacitance of the pure AGC supercapacitor electrodes was 236 F g−1, whereas electrodes from the material modified with 9 wt.% Ni(OH)2 showed a specific capacitance of up to 300 F g−1 at a current density of 50 mA g−1. The increase in specific capacitance achieved due to chemical modification was, therefore 27%.
Keywords
activated rice husk, few-layer graphene, nickel hydroxide, supercapacitor electrode
Suggested Citation
Yeleuov M, Seidl C, Temirgaliyeva T, Taurbekov A, Prikhodko N, Lesbayev B, Sultanov F, Daulbayev C, Kumekov S. Modified Activated Graphene-Based Carbon Electrodes from Rice Husk for Supercapacitor Applications. (2023). LAPSE:2023.26576
Author Affiliations
Yeleuov M: Department of Engineering Physics, Satbayev University, Almaty 050013, Kazakhstan; Laboratory of Carbon Nanomaterials Synthesis in Flame, Institute of Combustion Problems, Almaty 050000, Kazakhstan
Seidl C: Faculty of Engineering & Natural Sciences, Johannes Kepler University Linz, 4040 Linz, Austria
Temirgaliyeva T: Laboratory of Carbon Nanomaterials Synthesis in Flame, Institute of Combustion Problems, Almaty 050000, Kazakhstan; Faculty of Chemistry and Chemical Technology, al-Farabi Kazakh National University, Almaty 050000, Kazakhstan
Taurbekov A: Laboratory of Carbon Nanomaterials Synthesis in Flame, Institute of Combustion Problems, Almaty 050000, Kazakhstan; Faculty of Chemistry and Chemical Technology, al-Farabi Kazakh National University, Almaty 050000, Kazakhstan
Prikhodko N: Laboratory of Carbon Nanomaterials Synthesis in Flame, Institute of Combustion Problems, Almaty 050000, Kazakhstan; Department of Management and Entrepreneurship, Almaty University of Power Engineering and Telecommunications, Almaty 050013, Kazakhstan
Lesbayev B: Laboratory of Carbon Nanomaterials Synthesis in Flame, Institute of Combustion Problems, Almaty 050000, Kazakhstan; Faculty of Chemistry and Chemical Technology, al-Farabi Kazakh National University, Almaty 050000, Kazakhstan
Sultanov F: Laboratory of Carbon Nanomaterials Synthesis in Flame, Institute of Combustion Problems, Almaty 050000, Kazakhstan; Faculty of Chemistry and Chemical Technology, al-Farabi Kazakh National University, Almaty 050000, Kazakhstan
Daulbayev C: Department of Engineering Physics, Satbayev University, Almaty 050013, Kazakhstan; Laboratory of Carbon Nanomaterials Synthesis in Flame, Institute of Combustion Problems, Almaty 050000, Kazakhstan; Faculty of Chemistry and Chemical Technology, al-Farabi
Kumekov S: Department of Engineering Physics, Satbayev University, Almaty 050013, Kazakhstan
Journal Name
Energies
Volume
13
Issue
18
Article Number
E4943
Year
2020
Publication Date
2020-09-21
Published Version
ISSN
1996-1073
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PII: en13184943, Publication Type: Journal Article
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doi:10.3390/en13184943
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