Enhancing the cycling stability of Na-ion batteries by bonding MoS2 on assembled carbon-based materials
| Autor: | Juan Peng, Peng Meng, Jingyu Zhang, Zheng Liu, Bijun Tang, Shasha Guo, Qundong Fu, Pin Song, Bo Lin, Jun Di, Jiadong Zhou, Yongmin He, Lixing Kang, Manzhang Xu, Qingsheng Zeng, Jiewu Cui, Jun Xiong |
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| Rok vydání: | 2019 |
| Předmět: |
geography
geography.geographical_feature_category Materials science lcsh:T Carbonization Materials Science (miscellaneous) chemistry.chemical_element lcsh:Technology Hydrothermal circulation Anode Chemical engineering Volume (thermodynamics) chemistry lcsh:TA1-2040 Mechanics of Materials Electrical resistivity and conductivity Electrode Chemical Engineering (miscellaneous) Monolith lcsh:Engineering (General). Civil engineering (General) Carbon |
| Zdroj: | Nano Materials Science, Vol 1, Iss 4, Pp 310-317 (2019) |
| ISSN: | 2589-9651 |
| Popis: | Room temperature Na-ion batteries (SIBs) show great potential for use as renewable energy storage systems. However, the large-scale application of SIBs has been hindered by the lack of an ideal SIBs anode material. We synthesized MoS2 on carbonized graphene-chitosan (G-C) using the hydrothermal method. The strong interaction between the MoS2 and the G-C greatly improved the electron transport rate and maintained the structural stability of the electrode, which lead to both an excellent rate capability and long cycle stability. The G-C monolith was proven to enhance the electrical conductivity of the composites and served as a matrix for uniformly dispersing active MoS2 nanosheets (NSs), as well as being a buffer material to adapt to changes in volume during the cycle. Serving as an anode material for SIBs, the MoS2-G-C electrode showed good cycling stability (527.3 mAh g−1 at 100 mA g−1 after 200 cycles), excellent rate capability, and a long cycle life (439.1 mAh g−1 at 1A g−1 after 200 cycles). Keywords: Na-ion batteries, Carbon-based materials, MoS2, Long cycle life |
| Databáze: | OpenAIRE |
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