Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors
Carbon nanomaterials derived from Acacia auriculiformis pods as electrodes for the electrochemical double-layer capacitors were explored. Four pyrolysis temperatures were set (400, 600, 800, and 1,000°C) to understand the role of temperature in biomass pyrolysis via a possible “self-activation” mech...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021
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| Online Access: | http://umpir.ump.edu.my/id/eprint/32535/ http://umpir.ump.edu.my/id/eprint/32535/1/Acacia%20auriculiformis%20%E2%80%93%20derived%20bimodal%20porous%20nanocarbons%20via%20self-activation.pdf |
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| author | Bhat, Vinay S. Jayeoye, Titilope John Rujiralai, Thitima Sirimahachai, Uraiwan Chong, Kwok Feng Hegde, Gurumurthy |
| author_facet | Bhat, Vinay S. Jayeoye, Titilope John Rujiralai, Thitima Sirimahachai, Uraiwan Chong, Kwok Feng Hegde, Gurumurthy |
| author_sort | Bhat, Vinay S. |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Carbon nanomaterials derived from Acacia auriculiformis pods as electrodes for the electrochemical double-layer capacitors were explored. Four pyrolysis temperatures were set (400, 600, 800, and 1,000°C) to understand the role of temperature in biomass pyrolysis via a possible “self-activation” mechanism for the synthesis of carbon materials. The carbon materials synthesized at 800°C (AAC800) were found to exhibit a well-organized hierarchical porous structure, quantified further from N2 adsorption/desorption isotherms with a maximum specific surface area of 736.6 m2/g. Micropores were found to be contributing toward enhancing the specific surface area. AAC800 exhibited a maximum specific capacitance of 176.7 F/g at 0.5 A/g in 6.0 M KOH electrolyte in a three-electrode setup. A symmetric supercapacitor was fabricated using AAC800 as an active material in an organic electrolyte composed of 1.0 M tetraethylammonium tetrafluoroborate (TEABF4) as a conducting salt in the acetonitrile (ACN) solvent. The self-discharge of the cell/device was analyzed from fitting two different mathematical models; the cell also exhibited a remarkable coulombic efficiency of 100% over 10,000 charge/discharge cycles, retaining ∼93% capacitance at 2.3 V. |
| first_indexed | 2025-11-15T03:06:48Z |
| format | Article |
| id | ump-32535 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:06:48Z |
| publishDate | 2021 |
| publisher | Frontiers Media S.A. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-325352021-11-18T02:51:59Z http://umpir.ump.edu.my/id/eprint/32535/ Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors Bhat, Vinay S. Jayeoye, Titilope John Rujiralai, Thitima Sirimahachai, Uraiwan Chong, Kwok Feng Hegde, Gurumurthy TP Chemical technology Carbon nanomaterials derived from Acacia auriculiformis pods as electrodes for the electrochemical double-layer capacitors were explored. Four pyrolysis temperatures were set (400, 600, 800, and 1,000°C) to understand the role of temperature in biomass pyrolysis via a possible “self-activation” mechanism for the synthesis of carbon materials. The carbon materials synthesized at 800°C (AAC800) were found to exhibit a well-organized hierarchical porous structure, quantified further from N2 adsorption/desorption isotherms with a maximum specific surface area of 736.6 m2/g. Micropores were found to be contributing toward enhancing the specific surface area. AAC800 exhibited a maximum specific capacitance of 176.7 F/g at 0.5 A/g in 6.0 M KOH electrolyte in a three-electrode setup. A symmetric supercapacitor was fabricated using AAC800 as an active material in an organic electrolyte composed of 1.0 M tetraethylammonium tetrafluoroborate (TEABF4) as a conducting salt in the acetonitrile (ACN) solvent. The self-discharge of the cell/device was analyzed from fitting two different mathematical models; the cell also exhibited a remarkable coulombic efficiency of 100% over 10,000 charge/discharge cycles, retaining ∼93% capacitance at 2.3 V. Frontiers Media S.A. 2021-09-23 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/32535/1/Acacia%20auriculiformis%20%E2%80%93%20derived%20bimodal%20porous%20nanocarbons%20via%20self-activation.pdf Bhat, Vinay S. and Jayeoye, Titilope John and Rujiralai, Thitima and Sirimahachai, Uraiwan and Chong, Kwok Feng and Hegde, Gurumurthy (2021) Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors. Frontiers in Energy Research, 9 (744133). pp. 1-15. ISSN 2296-598X. (Published) https://doi.org/10.3389/fenrg.2021.744133 https://doi.org/10.3389/fenrg.2021.744133 |
| spellingShingle | TP Chemical technology Bhat, Vinay S. Jayeoye, Titilope John Rujiralai, Thitima Sirimahachai, Uraiwan Chong, Kwok Feng Hegde, Gurumurthy Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors |
| title | Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors |
| title_full | Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors |
| title_fullStr | Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors |
| title_full_unstemmed | Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors |
| title_short | Acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors |
| title_sort | acacia auriculiformis–derived bimodal porous nanocarbons via self-activation for high-performance supercapacitors |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/32535/ http://umpir.ump.edu.my/id/eprint/32535/ http://umpir.ump.edu.my/id/eprint/32535/ http://umpir.ump.edu.my/id/eprint/32535/1/Acacia%20auriculiformis%20%E2%80%93%20derived%20bimodal%20porous%20nanocarbons%20via%20self-activation.pdf |