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Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor
This work employs a non-corrosive and non-toxic molten salt combination of NaCl and KCl as an activation agent in an air environment to synthesize nitrogen-doped hierarchical porous carbon from plantain peels at 800 °C for supercapacitor application. Due to the synergistic effect of nitrogen doping,...
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| Format: | Article |
| Language: | en_US |
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Journal of Electroanalytical Chemistry
2024
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| access_status_str | Open Access |
| author | Nanzumani, Nashiru Mahadeen Agyemang, Frank Ofori Mensah-Darkwa, Kwadwo Appiah, Eugene Sefa Arthur, Emmanuel Kwesi Gikunoo, Emmanuel Koomson, Bennetta Jadhav, Amol R. Raji, Akeem |
| author_browse | Agyemang, Frank Ofori Appiah, Eugene Sefa Arthur, Emmanuel Kwesi Gikunoo, Emmanuel Jadhav, Amol R. Koomson, Bennetta Mensah-Darkwa, Kwadwo Nanzumani, Nashiru Mahadeen Raji, Akeem |
| author_facet | Nanzumani, Nashiru Mahadeen Agyemang, Frank Ofori Mensah-Darkwa, Kwadwo Appiah, Eugene Sefa Arthur, Emmanuel Kwesi Gikunoo, Emmanuel Koomson, Bennetta Jadhav, Amol R. Raji, Akeem |
| author_sort | Nanzumani, Nashiru Mahadeen |
| collection | Thesis |
| description | This work employs a non-corrosive and non-toxic molten salt combination of NaCl and KCl as an activation
agent in an air environment to synthesize nitrogen-doped hierarchical porous carbon from plantain peels at
800 °C for supercapacitor application. Due to the synergistic effect of nitrogen doping, the synthesized nitrogen-
doped activated unripe porous carbon (AUPN) has a hierarchical (micro-meso-macropores) porous structure
and a high surface area of 959 m2/g, providing sufficient active sites for charge storage, rapid electrolyte
and ionic mobility. X-ray diffraction and Raman spectroscopy analysis revealed the formation of a carbon product
with a limited degree of graphitization and the crystallite size (La), which is valuable for evaluating the
defects caused by nitrogen doping. In a three-electrode cell with a 6 M KOH electrolyte, AUPN recorded a specific
capacitance of 550 F/g at 1 A/g. After 1000 cycles, capacitance retention was 99% at 4 A/g. Compared to
other reported porous carbon materials, the overall electrochemical performance of AUPN is superior. This is
due to the abundant nitrogen-doping, which introduces pseudocapacitance and increases the surface wettability
of the porous carbon, resulting in a decrease in ionic-transport resistance.
These findings indicate that this green and scalable technique is a potential synthesis method for producing
porous carbon materials for energy storage applications. |
| format | Article |
| id | oai:ir.knust.edu.gh:123456789/15474 |
| institution | KNUST (Ghana) |
| language | en_US |
| last_indexed | 2026-07-01T04:01:38.805Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from KNUSTSpace — Kwame Nkrumah University of Science & Technology (Ghana) |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Journal of Electroanalytical Chemistry |
| publisherStr | Journal of Electroanalytical Chemistry |
| record_format | dspace |
| source_str | KNUSTSpace — Kwame Nkrumah University of Science & Technology (Ghana) |
| spelling | oai:ir.knust.edu.gh:123456789/15474 Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor Nanzumani, Nashiru Mahadeen Agyemang, Frank Ofori Mensah-Darkwa, Kwadwo Appiah, Eugene Sefa Arthur, Emmanuel Kwesi Gikunoo, Emmanuel Koomson, Bennetta Jadhav, Amol R. Raji, Akeem This work employs a non-corrosive and non-toxic molten salt combination of NaCl and KCl as an activation agent in an air environment to synthesize nitrogen-doped hierarchical porous carbon from plantain peels at 800 °C for supercapacitor application. Due to the synergistic effect of nitrogen doping, the synthesized nitrogen- doped activated unripe porous carbon (AUPN) has a hierarchical (micro-meso-macropores) porous structure and a high surface area of 959 m2/g, providing sufficient active sites for charge storage, rapid electrolyte and ionic mobility. X-ray diffraction and Raman spectroscopy analysis revealed the formation of a carbon product with a limited degree of graphitization and the crystallite size (La), which is valuable for evaluating the defects caused by nitrogen doping. In a three-electrode cell with a 6 M KOH electrolyte, AUPN recorded a specific capacitance of 550 F/g at 1 A/g. After 1000 cycles, capacitance retention was 99% at 4 A/g. Compared to other reported porous carbon materials, the overall electrochemical performance of AUPN is superior. This is due to the abundant nitrogen-doping, which introduces pseudocapacitance and increases the surface wettability of the porous carbon, resulting in a decrease in ionic-transport resistance. These findings indicate that this green and scalable technique is a potential synthesis method for producing porous carbon materials for energy storage applications. The KEEP CoE Innovation Fund, College of Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana, provided financial support for this work. 2024-02-14T12:28:57Z 2024-02-14T12:28:57Z 2022-09-01 Article Nashiru Mahadeen Nanzumani, Frank Ofori Agyemang, Kwadwo Mensah-Darkwa, Eugene Sefa Appiah, Emmanuel Kwesi Arthur, Emmanuel Gikunoo, Bennetta Koomson, Amol R. Jadhav, Akeem Raji, Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor, Journal of Electroanalytical Chemistry, Volume 920, 2022, 116645 1572-6657 https://ir.knust.edu.gh/handle/123456789/15474 en_US application/pdf Journal of Electroanalytical Chemistry |
| spellingShingle | Nanzumani, Nashiru Mahadeen Agyemang, Frank Ofori Mensah-Darkwa, Kwadwo Appiah, Eugene Sefa Arthur, Emmanuel Kwesi Gikunoo, Emmanuel Koomson, Bennetta Jadhav, Amol R. Raji, Akeem Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor |
| title | Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor |
| title_full | Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor |
| title_fullStr | Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor |
| title_full_unstemmed | Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor |
| title_short | Molten salt synthesis of nitrogen-doped hierarchical porous carbon from plantain peels for high-performance supercapacitor |
| title_sort | molten salt synthesis of nitrogen doped hierarchical porous carbon from plantain peels for high performance supercapacitor |
| url | https://ir.knust.edu.gh/handle/123456789/15474 |
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