Binder-free fabricated CuFeS2 electrodes for supercapacitor applications
Copper iron sulfide (CFS) (chalcopyrite) thin-film electrodes have been synthesized for energy storage applications using the SILAR method without the use of a binder. The film’s structural as well as the morphological and electrochemical characteristics were studied to check the effect of varying d...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac4f13 |
| _version_ | 1827869077126774784 |
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| author | Hope Ebere Nsude Raphael M Obodo Kingsley U Nsude Lucky I Ikhioya Paul U Asogwa R U Osuji M Maaza Fabian I Ezema |
| author_facet | Hope Ebere Nsude Raphael M Obodo Kingsley U Nsude Lucky I Ikhioya Paul U Asogwa R U Osuji M Maaza Fabian I Ezema |
| author_sort | Hope Ebere Nsude |
| collection | DOAJ |
| description | Copper iron sulfide (CFS) (chalcopyrite) thin-film electrodes have been synthesized for energy storage applications using the SILAR method without the use of a binder. The film’s structural as well as the morphological and electrochemical characteristics were studied to check the effect of varying deposition cycles. The x-ray diffraction (XRD) test reveals a crystalline tetragonal CuFeS _2 (chalcopyrite) with a decreasing peak as the deposition cycle progresses. The micrographs of the films reveal a spherical but fleecy-like shape with particle aggregation at higher deposition cycles. The bandgap increased slightly towards higher cycles and is in the range of 1.15 to 1.22 eV. The CFS electrodes were evaluated in a three-electrode arrangement for supercapacitive application in a 2.0 M KOH electrolyte. The CFS electrodes function admirably. The greatest specific capacitance recorded was 537 F g ^−1 at 10 mV s ^−1 with capacitance retention of 93.5%. This is for CFS electrode deposited at 10 cycles; hence it has the greatest performance. This paper describes a simple, inexpensive, and repeatable method for fabricating electrodes for supercapacitors. |
| first_indexed | 2024-03-12T15:39:53Z |
| format | Article |
| id | doaj.art-15ca3597703a4510b4d629e728ed6a76 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:39:53Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-15ca3597703a4510b4d629e728ed6a762023-08-09T16:01:14ZengIOP PublishingMaterials Research Express2053-15912022-01-019202550110.1088/2053-1591/ac4f13Binder-free fabricated CuFeS2 electrodes for supercapacitor applicationsHope Ebere Nsude0Raphael M Obodo1https://orcid.org/0000-0001-7418-8526Kingsley U Nsude2Lucky I Ikhioya3https://orcid.org/0000-0002-5959-4427Paul U Asogwa4R U Osuji5M Maaza6Fabian I Ezema7https://orcid.org/0000-0002-4633-1417Department of Physics and Astronomy, University of Nigeria , Nsukka, 410001, Enugu State, NigeriaDepartment of Physics and Astronomy, University of Nigeria , Nsukka, 410001, Enugu State, Nigeria; National Center for Physics, Islamabad, 44000, Pakistan; NPU-NCP Joint International Research Center on Advanced Nanomaterials and Defects Engineering, Northwestern Polytechnical University , Xi’an, 710072, People’s Republic of ChinaDepartment of Physics and Astronomy, University of Nigeria , Nsukka, 410001, Enugu State, NigeriaDepartment of Physics and Astronomy, University of Nigeria , Nsukka, 410001, Enugu State, NigeriaDepartment of Physics and Astronomy, University of Nigeria , Nsukka, 410001, Enugu State, NigeriaDepartment of Physics and Astronomy, University of Nigeria , Nsukka, 410001, Enugu State, NigeriaNanosciences African Network (NANOAFNET) iThemba LABS-National Research Foundation, 1 Old Faure Road, Somerset West 7129, PO Box 722, Somerset West, Western Cape Province, South Africa; UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology, College of Graduate Studies, University of South Africa (UNISA) , Muckleneuk Ridge, PO Box 392, Pretoria, South AfricaDepartment of Physics and Astronomy, University of Nigeria , Nsukka, 410001, Enugu State, Nigeria; Nanosciences African Network (NANOAFNET) iThemba LABS-National Research Foundation, 1 Old Faure Road, Somerset West 7129, PO Box 722, Somerset West, Western Cape Province, South Africa; UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology, College of Graduate Studies, University of South Africa (UNISA) , Muckleneuk Ridge, PO Box 392, Pretoria, South Africa; Africa Centre of Excellence for Sustainable Power and Energy Development (ACE-SPED), University of Nigeria , Nsukka, NigeriaCopper iron sulfide (CFS) (chalcopyrite) thin-film electrodes have been synthesized for energy storage applications using the SILAR method without the use of a binder. The film’s structural as well as the morphological and electrochemical characteristics were studied to check the effect of varying deposition cycles. The x-ray diffraction (XRD) test reveals a crystalline tetragonal CuFeS _2 (chalcopyrite) with a decreasing peak as the deposition cycle progresses. The micrographs of the films reveal a spherical but fleecy-like shape with particle aggregation at higher deposition cycles. The bandgap increased slightly towards higher cycles and is in the range of 1.15 to 1.22 eV. The CFS electrodes were evaluated in a three-electrode arrangement for supercapacitive application in a 2.0 M KOH electrolyte. The CFS electrodes function admirably. The greatest specific capacitance recorded was 537 F g ^−1 at 10 mV s ^−1 with capacitance retention of 93.5%. This is for CFS electrode deposited at 10 cycles; hence it has the greatest performance. This paper describes a simple, inexpensive, and repeatable method for fabricating electrodes for supercapacitors.https://doi.org/10.1088/2053-1591/ac4f13SILARelectrodescopper oxidesupercapacitorenergy storage devices |
| spellingShingle | Hope Ebere Nsude Raphael M Obodo Kingsley U Nsude Lucky I Ikhioya Paul U Asogwa R U Osuji M Maaza Fabian I Ezema Binder-free fabricated CuFeS2 electrodes for supercapacitor applications Materials Research Express SILAR electrodes copper oxide supercapacitor energy storage devices |
| title | Binder-free fabricated CuFeS2 electrodes for supercapacitor applications |
| title_full | Binder-free fabricated CuFeS2 electrodes for supercapacitor applications |
| title_fullStr | Binder-free fabricated CuFeS2 electrodes for supercapacitor applications |
| title_full_unstemmed | Binder-free fabricated CuFeS2 electrodes for supercapacitor applications |
| title_short | Binder-free fabricated CuFeS2 electrodes for supercapacitor applications |
| title_sort | binder free fabricated cufes2 electrodes for supercapacitor applications |
| topic | SILAR electrodes copper oxide supercapacitor energy storage devices |
| url | https://doi.org/10.1088/2053-1591/ac4f13 |
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