Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte
Redox additive added aqueous electrolyte attract extensive interest in supercapacitor application. Herein, the electrochemical of the synthesized Fe3O4/Si/GNP composite cathode electrode material was conducted in a two-electrode system via Swagelok cell assembly in the presence of with and without r...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024
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| Online Access: | http://psasir.upm.edu.my/id/eprint/113605/1/113605.pdf |
| _version_ | 1825940350777163776 |
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| author | Bala Krishnan, Hanusha Lim, Hong Ngee Ibrahim, Izwaharyanie Wahid, Mohd Haniff Foo, Chuan Yi |
| author_facet | Bala Krishnan, Hanusha Lim, Hong Ngee Ibrahim, Izwaharyanie Wahid, Mohd Haniff Foo, Chuan Yi |
| author_sort | Bala Krishnan, Hanusha |
| collection | UPM |
| description | Redox additive added aqueous electrolyte attract extensive interest in supercapacitor application. Herein, the electrochemical of the synthesized Fe3O4/Si/GNP composite cathode electrode material was conducted in a two-electrode system via Swagelok cell assembly in the presence of with and without redox additive (0.2 M K3Fe(CN)6 in 1 M Li2SO4). The Fe3O4/Si/GNP composite was successfully synthesized by facile solvothermal method followed by calcination. The structural and morphology investigations of the Fe3O4/Si/GNP composite are conducted via XRD, FESEM, and BET analyses. The synergic effects between the composite material and redox-active ion (Fe2+/Fe3+) in the redox additive electrolyte enhance faradaic reactions, which are utilized to design a high-energy density supercapacitor. The Fe3O4/Si/GNP composite in redox additive electrolyte exhibits a 64.38 % increase in specific capacitance (319.45 F g−1 at 1 A g−1) and a 70.95 % increase in terms of energy density (35.56 Wh kg−1). Redox additive ions in the electrolyte enhance ionic conductivity and facilitate electron transfer across the porous structure of the Fe3O4/Si/GNP composite. The fast reversible kinetics of iron ions enable it to sustain decent cycle stability with a capacitance retention of 73.7 % after 1200 cycles. |
| first_indexed | 2024-12-09T02:26:46Z |
| format | Article |
| id | upm.eprints-113605 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-12-09T02:26:46Z |
| publishDate | 2024 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-1136052024-11-14T03:42:26Z http://psasir.upm.edu.my/id/eprint/113605/ Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte Bala Krishnan, Hanusha Lim, Hong Ngee Ibrahim, Izwaharyanie Wahid, Mohd Haniff Foo, Chuan Yi Redox additive added aqueous electrolyte attract extensive interest in supercapacitor application. Herein, the electrochemical of the synthesized Fe3O4/Si/GNP composite cathode electrode material was conducted in a two-electrode system via Swagelok cell assembly in the presence of with and without redox additive (0.2 M K3Fe(CN)6 in 1 M Li2SO4). The Fe3O4/Si/GNP composite was successfully synthesized by facile solvothermal method followed by calcination. The structural and morphology investigations of the Fe3O4/Si/GNP composite are conducted via XRD, FESEM, and BET analyses. The synergic effects between the composite material and redox-active ion (Fe2+/Fe3+) in the redox additive electrolyte enhance faradaic reactions, which are utilized to design a high-energy density supercapacitor. The Fe3O4/Si/GNP composite in redox additive electrolyte exhibits a 64.38 % increase in specific capacitance (319.45 F g−1 at 1 A g−1) and a 70.95 % increase in terms of energy density (35.56 Wh kg−1). Redox additive ions in the electrolyte enhance ionic conductivity and facilitate electron transfer across the porous structure of the Fe3O4/Si/GNP composite. The fast reversible kinetics of iron ions enable it to sustain decent cycle stability with a capacitance retention of 73.7 % after 1200 cycles. Elsevier 2024 Article PeerReviewed text en cc_by_nc_4 http://psasir.upm.edu.my/id/eprint/113605/1/113605.pdf Bala Krishnan, Hanusha and Lim, Hong Ngee and Ibrahim, Izwaharyanie and Wahid, Mohd Haniff and Foo, Chuan Yi (2024) Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte. Journal of Alloys and Compounds, 1002. art. no. 175403. pp. 1-9. ISSN 0925-8388 https://www.sciencedirect.com/science/article/pii/S092583882401990X?via%3Dihub 10.1016/j.jallcom.2024.175403 |
| spellingShingle | Bala Krishnan, Hanusha Lim, Hong Ngee Ibrahim, Izwaharyanie Wahid, Mohd Haniff Foo, Chuan Yi Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte |
| title | Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte |
| title_full | Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte |
| title_fullStr | Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte |
| title_full_unstemmed | Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte |
| title_short | Enhancement of energy density for iron MOF-derived composite for aqueous supercapacitor by K3[Fe(CN)6] redox additive electrolyte |
| title_sort | enhancement of energy density for iron mof derived composite for aqueous supercapacitor by k3 fe cn 6 redox additive electrolyte |
| url | http://psasir.upm.edu.my/id/eprint/113605/1/113605.pdf |
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