Advancing Supercapacitors with Coconut Rachis Activated Carbon: A Sustainable Electrode Material
Carbon derived from renewable energy sources plays a crucial role in fostering sustainability within supercapacitor applications. This study investigates the use of activated carbon produced from a unique biomass source, coconut rachis, containing approximately 81% carbon, as a potential electrode m...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2025-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/21/e3sconf_icgest2025_03020.pdf |
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| Summary: | Carbon derived from renewable energy sources plays a crucial role in fostering sustainability within supercapacitor applications. This study investigates the use of activated carbon produced from a unique biomass source, coconut rachis, containing approximately 81% carbon, as a potential electrode material. The coconut rachis-derived activated carbon features a high surface area (around 1630 m2·g−1) and a honeycomb-like surface structure, which enhance its ability to adsorb electrolyte ions efficiently. This carbon is termed as honeycomb-shaped porous carbon (HSPC). The performances of these electrodes in adsorbing different cations, i.e., Na+ and Li + in 1M Na2SO4 and 1M Li2SO4 electrolytes, were studied and reported a higher specific capacitance. The supercapacitor performance using 1M Na2SO4 as an electrolyte shows a high energy density and potential window. The supercapacitor also shows excellent cyclic stability with an increment in capacitance retention from 82 % to 93% over 2000 cycles. Keywords: Renewable carbon, Bioresources, Electrochemical Double Layer Capacitor (EDLC), Cation adsorption, Supercapacitors. |
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| ISSN: | 2267-1242 |