In situ synthesis of Mo-doped carbon-coated NiCo2S4 nanosheet networks for supercapacitors
Supercapacitors offer numerous advantages, including high power output, quick charging and discharging rates, and stable cycling performance. Nevertheless, their energy density and cycle life still fall short of current industry demands for energy storage. To address these challenges, this work fabr...
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Elsevier
2025-01-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248124001966 |
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| author | Kaiyu Wang Fan Zhou Jiangnan Chu Wenchong Ouyang Kun Wang Zhengwei Wu |
| author_facet | Kaiyu Wang Fan Zhou Jiangnan Chu Wenchong Ouyang Kun Wang Zhengwei Wu |
| author_sort | Kaiyu Wang |
| collection | DOAJ |
| description | Supercapacitors offer numerous advantages, including high power output, quick charging and discharging rates, and stable cycling performance. Nevertheless, their energy density and cycle life still fall short of current industry demands for energy storage. To address these challenges, this work fabricated nanostructured electrodes by synthesizing molybdenum-doped carbon-coated NiCo2S4 (C@NiCo2S4-Mo), using NiCo2S4 as the precursor. The doping of molybdenum, a transition metal with many oxidation states, significantly improved the electronic structure and stability of the electrode material. Additionally, incorporating a carbon-coated structure enhanced the material’s stability during cycling, extending its operational lifespan. The results demonstrated that C@NiCo2S4-Mo exhibited exceptional electrochemical properties, featuring a defined capacitance of 931.75 Farad/g under the current flux of 1 A/g. This high specific capacitance value, a vital factor regarding capacitor performance, directly influences the energy storage capacity of the device, indicating the high potential of the C@NiCo2S4-Mo material for supercapacitors. It was observed that the particular capacity retention was 76.6 % when the current density was increased by a factor of 10. The substance also showed favorable pseudocapacitive characteristics, retaining 87.7 % of its particular capacitance after prolonged cycling in cyclic voltammetry (CV) tests, highlighting its outstanding cyclic stability. Furthermore, supercapacitors constructed from C@NiCo2S4-Mo achieved an energy density of 14.5 Wh/kg at a power density of 700 kW/kg, making them promising candidates for energy storage applications. |
| format | Article |
| id | doaj-art-15c88168d1334aceb2d5934d08bd15fb |
| institution | Kabale University |
| issn | 1388-2481 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj-art-15c88168d1334aceb2d5934d08bd15fb2025-01-12T05:24:25ZengElsevierElectrochemistry Communications1388-24812025-01-01170107853In situ synthesis of Mo-doped carbon-coated NiCo2S4 nanosheet networks for supercapacitorsKaiyu Wang0Fan Zhou1Jiangnan Chu2Wenchong Ouyang3Kun Wang4Zhengwei Wu5Institute of Advanced Technology, University of Science and Technology of China, Hefei 230022, ChinaInstitute of Advanced Technology, University of Science and Technology of China, Hefei 230022, ChinaInstitute of Advanced Technology, University of Science and Technology of China, Hefei 230022, ChinaSchool of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China; School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaChina Energy Engineering Group Anhui Electric Power Design Institute Company Limited, Hefei 230601, China; Corresponding author.Institute of Advanced Technology, University of Science and Technology of China, Hefei 230022, China; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China; Corresponding author at: Institute of Advanced Technology, University of Science and Technology of China, Hefei 230022, China.Supercapacitors offer numerous advantages, including high power output, quick charging and discharging rates, and stable cycling performance. Nevertheless, their energy density and cycle life still fall short of current industry demands for energy storage. To address these challenges, this work fabricated nanostructured electrodes by synthesizing molybdenum-doped carbon-coated NiCo2S4 (C@NiCo2S4-Mo), using NiCo2S4 as the precursor. The doping of molybdenum, a transition metal with many oxidation states, significantly improved the electronic structure and stability of the electrode material. Additionally, incorporating a carbon-coated structure enhanced the material’s stability during cycling, extending its operational lifespan. The results demonstrated that C@NiCo2S4-Mo exhibited exceptional electrochemical properties, featuring a defined capacitance of 931.75 Farad/g under the current flux of 1 A/g. This high specific capacitance value, a vital factor regarding capacitor performance, directly influences the energy storage capacity of the device, indicating the high potential of the C@NiCo2S4-Mo material for supercapacitors. It was observed that the particular capacity retention was 76.6 % when the current density was increased by a factor of 10. The substance also showed favorable pseudocapacitive characteristics, retaining 87.7 % of its particular capacitance after prolonged cycling in cyclic voltammetry (CV) tests, highlighting its outstanding cyclic stability. Furthermore, supercapacitors constructed from C@NiCo2S4-Mo achieved an energy density of 14.5 Wh/kg at a power density of 700 kW/kg, making them promising candidates for energy storage applications.http://www.sciencedirect.com/science/article/pii/S1388248124001966SupercapacitorMolybdenum dopingCompositeC@NiCo2S4-Mo |
| spellingShingle | Kaiyu Wang Fan Zhou Jiangnan Chu Wenchong Ouyang Kun Wang Zhengwei Wu In situ synthesis of Mo-doped carbon-coated NiCo2S4 nanosheet networks for supercapacitors Electrochemistry Communications Supercapacitor Molybdenum doping Composite C@NiCo2S4-Mo |
| title | In situ synthesis of Mo-doped carbon-coated NiCo2S4 nanosheet networks for supercapacitors |
| title_full | In situ synthesis of Mo-doped carbon-coated NiCo2S4 nanosheet networks for supercapacitors |
| title_fullStr | In situ synthesis of Mo-doped carbon-coated NiCo2S4 nanosheet networks for supercapacitors |
| title_full_unstemmed | In situ synthesis of Mo-doped carbon-coated NiCo2S4 nanosheet networks for supercapacitors |
| title_short | In situ synthesis of Mo-doped carbon-coated NiCo2S4 nanosheet networks for supercapacitors |
| title_sort | in situ synthesis of mo doped carbon coated nico2s4 nanosheet networks for supercapacitors |
| topic | Supercapacitor Molybdenum doping Composite C@NiCo2S4-Mo |
| url | http://www.sciencedirect.com/science/article/pii/S1388248124001966 |
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