3D tremella-like nitrogen-doped carbon encapsulated few-layer MoS2 for lithium-ion batteries
| Autor: | Kai Zhu, Guangsheng Dong, Ke Ye, Jun Yan, Yongzheng Fang, Shuqing Liao, Guiling Wang, Dianxue Cao |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Carbonization chemistry.chemical_element 02 engineering and technology Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Ion Anode Biomaterials Colloid and Surface Chemistry chemistry Chemical engineering Lithium 0210 nano-technology Porosity Current density Carbon |
| Zdroj: | Journal of Colloid and Interface Science. 601:594-603 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2021.05.150 |
| Popis: | MoS2 is regarded as an attractive anode material for lithium-ion batteries due to its layered structure and high theoretical specific capacity. Its unsatisfied conductivity and the considerable volume change during the charge and discharge process, however, limits its rate performance and cycling stability. Herein, 3D tremella-like nitrogen-doped carbon encapsulated few-layer MoS2 (MoS2@NC) hybrid is obtained via a unique strategy with simultaneously poly-dopamine carbonization, and molybdenum oxide specifies sulfurization. The three-dimensional porous nitrogen-doped carbon served both as a mechanical supporting structure for stabilization of few-layers MoS2 and a good electron conductor. The MoS2@NC exhibits enhanced high rate performance with a specific capacity of 208.7 mAh g−1 at a current density of 10 A g−1 and stable cycling performance with a capacity retention rate of 85.7% after 1000 cycles at 2 A g−1. |
| Databáze: | OpenAIRE |
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