Improving the Reaction Kinetics by Annealing MoS<sub>2</sub>/PVP Nanoflowers for Sodium-Ion Storage
Under the ever-growing demand for electrochemical energy storage devices, developing anode materials with low cost and high performance is crucial. This study established a multiscale design of MoS<sub>2</sub>/carbon composites with a hollow nanoflower structure (MoS<sub>2</sub&...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/7/2948 |
| _version_ | 1797607418677428224 |
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| author | Yuan Li Lingxing Zan Jingbo Chen |
| author_facet | Yuan Li Lingxing Zan Jingbo Chen |
| author_sort | Yuan Li |
| collection | DOAJ |
| description | Under the ever-growing demand for electrochemical energy storage devices, developing anode materials with low cost and high performance is crucial. This study established a multiscale design of MoS<sub>2</sub>/carbon composites with a hollow nanoflower structure (MoS<sub>2</sub>/C NFs) for use in sodium-ion batteries as anode materials. The NF structure consists of several MoS<sub>2</sub> nanosheets embedded with carbon layers, considerably increasing the interlayer distance. Compared with pristine MoS<sub>2</sub> crystals, the carbon matrix and hollow-hierarchical structure of MoS<sub>2</sub>/C exhibit higher electronic conductivity and optimized thermodynamic/kinetic potential for the migration of sodium ions. Hence, the synthesized MoS<sub>2</sub>/C NFs exhibited an excellent capacity of 1300 mA h g<sup>−1</sup> after 50 cycles at a current density of 0.1 A g<sup>−1</sup> and 630 mA h g<sup>−1</sup> at 2 A g<sup>−1</sup> and high-capacity retention at large charge/discharge current density (80% after 600 cycles 2 A g<sup>−1</sup>). The suggested approach can be adopted to optimize layered materials by embedding layered carbon matrixes. Such optimized materials can be used as electrodes in sodium-ion batteries, among other electrochemical applications. |
| first_indexed | 2024-03-11T05:29:46Z |
| format | Article |
| id | doaj.art-76ad8d8f2c724733a32cf72e6a52dc89 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T05:29:46Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-76ad8d8f2c724733a32cf72e6a52dc892023-11-17T17:11:18ZengMDPI AGMolecules1420-30492023-03-01287294810.3390/molecules28072948Improving the Reaction Kinetics by Annealing MoS<sub>2</sub>/PVP Nanoflowers for Sodium-Ion StorageYuan Li0Lingxing Zan1Jingbo Chen2School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaKey Laboratory of Chemical Reaction Engineering of Shaanxi Province, College of Chemistry & Chemical Engineering, Yan’an University, Yan’an 716000, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaUnder the ever-growing demand for electrochemical energy storage devices, developing anode materials with low cost and high performance is crucial. This study established a multiscale design of MoS<sub>2</sub>/carbon composites with a hollow nanoflower structure (MoS<sub>2</sub>/C NFs) for use in sodium-ion batteries as anode materials. The NF structure consists of several MoS<sub>2</sub> nanosheets embedded with carbon layers, considerably increasing the interlayer distance. Compared with pristine MoS<sub>2</sub> crystals, the carbon matrix and hollow-hierarchical structure of MoS<sub>2</sub>/C exhibit higher electronic conductivity and optimized thermodynamic/kinetic potential for the migration of sodium ions. Hence, the synthesized MoS<sub>2</sub>/C NFs exhibited an excellent capacity of 1300 mA h g<sup>−1</sup> after 50 cycles at a current density of 0.1 A g<sup>−1</sup> and 630 mA h g<sup>−1</sup> at 2 A g<sup>−1</sup> and high-capacity retention at large charge/discharge current density (80% after 600 cycles 2 A g<sup>−1</sup>). The suggested approach can be adopted to optimize layered materials by embedding layered carbon matrixes. Such optimized materials can be used as electrodes in sodium-ion batteries, among other electrochemical applications.https://www.mdpi.com/1420-3049/28/7/2948MoS<sub>2</sub>hollow nanoflower structuresuperior conductivityanode materialssodium-ion batteries |
| spellingShingle | Yuan Li Lingxing Zan Jingbo Chen Improving the Reaction Kinetics by Annealing MoS<sub>2</sub>/PVP Nanoflowers for Sodium-Ion Storage Molecules MoS<sub>2</sub> hollow nanoflower structure superior conductivity anode materials sodium-ion batteries |
| title | Improving the Reaction Kinetics by Annealing MoS<sub>2</sub>/PVP Nanoflowers for Sodium-Ion Storage |
| title_full | Improving the Reaction Kinetics by Annealing MoS<sub>2</sub>/PVP Nanoflowers for Sodium-Ion Storage |
| title_fullStr | Improving the Reaction Kinetics by Annealing MoS<sub>2</sub>/PVP Nanoflowers for Sodium-Ion Storage |
| title_full_unstemmed | Improving the Reaction Kinetics by Annealing MoS<sub>2</sub>/PVP Nanoflowers for Sodium-Ion Storage |
| title_short | Improving the Reaction Kinetics by Annealing MoS<sub>2</sub>/PVP Nanoflowers for Sodium-Ion Storage |
| title_sort | improving the reaction kinetics by annealing mos sub 2 sub pvp nanoflowers for sodium ion storage |
| topic | MoS<sub>2</sub> hollow nanoflower structure superior conductivity anode materials sodium-ion batteries |
| url | https://www.mdpi.com/1420-3049/28/7/2948 |
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