Tuning the structure of three dimensional nanostructured molybdenum disulfide/nitrogen-doped carbon composite for high lithium storage
| Autor: | Chunyan Qin, Changchun Yu, Yu Ge, Yunfeng Chao, Jicheng Jiang, Yong Zhao, Caiyun Wang, Amruthalakshmi Vijayakumar, Gordon G. Wallace |
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| Rok vydání: | 2018 |
| Předmět: |
Nanostructure
Materials science Annealing (metallurgy) General Chemical Engineering Composite number 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry Polypyrrole 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Chemical engineering law 0210 nano-technology Molybdenum disulfide Current density |
| Zdroj: | Electrochimica Acta. 291:197-205 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2018.08.148 |
| Popis: | Molybdenum disulfide/nitrogen-doped carbon nanocomposite can afford high capacity, good rate capability and cycling stability in lithium ion batteries owing to the synergistic effect from these two components. Structure of the material has a great impact on the performance as well. In this work, MoS2/nitrogen-doped carbon (MoS2/C) composites have been developed by manipulating the nano-featured polypyrrole templates to guide and confine their growth. They are formed via a simple hydrothermal process combined with a subsequent annealing process. The MoS2/nitrogen-doped carbon nanotubes (MoS2/CNT) composite with 76% of MoS2 exhibits an excellent performance including a high capacity of 1232 mAh g−1 at a current density of 0.1 A g−1, outstanding rate capability (947 mAh g−1 at 2 A g−1), and good cycling stability with 754 mAh g−1 retained over 1000 charge/discharge cycles at a high current density of 1 A g−1. This performance is much better than that MoS2/nitrogen-doped carbon nanoparticles (MoS2/CNP) composite. This work demonstrates the importance of introducing three-dimensional nanostructures in electrode materials to improve their electrochemical performance. |
| Databáze: | OpenAIRE |
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