Rapid and stable energy storage using MoN/Mo2N composite electrodes
Molybdenum nitride-based composites, specifically the two-dimensional MoN/Mo2N variants, emerge as promising electrode materials for next-generation energy storage devices. This research presents a facile synthesis approach involving a mechanochemical method followed by heat treatment at 900 ֯C in a...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Applied Surface Science Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666523924000072 |
| _version_ | 1827342042387185664 |
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| author | Jeyakiruba Palraj Anthony Arulraj Sasikumar M Helen Annal Therese |
| author_facet | Jeyakiruba Palraj Anthony Arulraj Sasikumar M Helen Annal Therese |
| author_sort | Jeyakiruba Palraj |
| collection | DOAJ |
| description | Molybdenum nitride-based composites, specifically the two-dimensional MoN/Mo2N variants, emerge as promising electrode materials for next-generation energy storage devices. This research presents a facile synthesis approach involving a mechanochemical method followed by heat treatment at 900 ֯C in a nitrogen atmosphere to produce the MoN/Mo2N composite material. Crystallographic analysis using X-ray diffraction (XRD) and morphological characterization via high-resolution scanning electron microscopy (HRSEM) were conducted. The electrochemical evaluation demonstrated remarkable supercapacitor performance, with a specific capacitance of 306.7 F/g at 1 A/g, highlighting exceptional charge storage capacity. Even at a higher current density of 2 A/g, the composite maintained substantial reversible capacity (198.6 F/g), higher capacitance retention (95.7 %), and Coulombic efficiency (86.2 %) over 6000 cycles, showcasing its robust stability. At a challenging current density of 10 A/g, the specific capacitance remained high at 85.4 F/g. Detailed charge storage mechanism analysis, employing the Dunn method, revealed a complex interplay of capacitive and diffusive processes. Particularly noteworthy was the predominance of capacitive behavior, constituting 78.4 % at an accelerated scan rate of 100 mV/s. This observation underscores the material's advantageous propensity for a higher proportion of capacitive behavior in the charge storage mechanism at elevated scan rates, making it well-suited for applications requiring rapid energy storage and release. |
| first_indexed | 2024-03-07T21:59:46Z |
| format | Article |
| id | doaj.art-193d7203fa74424abc83f5390eb3013e |
| institution | Directory Open Access Journal |
| issn | 2666-5239 |
| language | English |
| last_indexed | 2024-03-07T21:59:46Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applied Surface Science Advances |
| spelling | doaj.art-193d7203fa74424abc83f5390eb3013e2024-02-24T04:55:34ZengElsevierApplied Surface Science Advances2666-52392024-02-0119100579Rapid and stable energy storage using MoN/Mo2N composite electrodesJeyakiruba Palraj0Anthony Arulraj1Sasikumar M2Helen Annal Therese3Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Chengalpattu Dt., Kattankulathur, Tamil Nadu 603203, IndiaSchool of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu 613401, IndiaResearch Department of Physics, Bishop Heber College, Tiruchirappalli, Tamil Nadu 620017, IndiaDepartment of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Chengalpattu Dt., Kattankulathur, Tamil Nadu 603203, India; Corresponding author.Molybdenum nitride-based composites, specifically the two-dimensional MoN/Mo2N variants, emerge as promising electrode materials for next-generation energy storage devices. This research presents a facile synthesis approach involving a mechanochemical method followed by heat treatment at 900 ֯C in a nitrogen atmosphere to produce the MoN/Mo2N composite material. Crystallographic analysis using X-ray diffraction (XRD) and morphological characterization via high-resolution scanning electron microscopy (HRSEM) were conducted. The electrochemical evaluation demonstrated remarkable supercapacitor performance, with a specific capacitance of 306.7 F/g at 1 A/g, highlighting exceptional charge storage capacity. Even at a higher current density of 2 A/g, the composite maintained substantial reversible capacity (198.6 F/g), higher capacitance retention (95.7 %), and Coulombic efficiency (86.2 %) over 6000 cycles, showcasing its robust stability. At a challenging current density of 10 A/g, the specific capacitance remained high at 85.4 F/g. Detailed charge storage mechanism analysis, employing the Dunn method, revealed a complex interplay of capacitive and diffusive processes. Particularly noteworthy was the predominance of capacitive behavior, constituting 78.4 % at an accelerated scan rate of 100 mV/s. This observation underscores the material's advantageous propensity for a higher proportion of capacitive behavior in the charge storage mechanism at elevated scan rates, making it well-suited for applications requiring rapid energy storage and release.http://www.sciencedirect.com/science/article/pii/S2666523924000072Energy storageNanorodsPesudocapcitorMechanochemical methodb-values |
| spellingShingle | Jeyakiruba Palraj Anthony Arulraj Sasikumar M Helen Annal Therese Rapid and stable energy storage using MoN/Mo2N composite electrodes Applied Surface Science Advances Energy storage Nanorods Pesudocapcitor Mechanochemical method b-values |
| title | Rapid and stable energy storage using MoN/Mo2N composite electrodes |
| title_full | Rapid and stable energy storage using MoN/Mo2N composite electrodes |
| title_fullStr | Rapid and stable energy storage using MoN/Mo2N composite electrodes |
| title_full_unstemmed | Rapid and stable energy storage using MoN/Mo2N composite electrodes |
| title_short | Rapid and stable energy storage using MoN/Mo2N composite electrodes |
| title_sort | rapid and stable energy storage using mon mo2n composite electrodes |
| topic | Energy storage Nanorods Pesudocapcitor Mechanochemical method b-values |
| url | http://www.sciencedirect.com/science/article/pii/S2666523924000072 |
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