N-doped carbon@nanoplate-assembled MoS2 hierarchical microspheres as anode material for lithium-ion batteries
2019; Elsevier BV; Volume: 243; Linguagem: Inglês
10.1016/j.matlet.2019.01.141
ISSN1873-4979
AutoresYouguo Huang, Yi Wang, Xiaohui Zhang, Feiyan Lai, Yanna Sun, Qingyu Li, Hongqiang Wang,
Tópico(s)MXene and MAX Phase Materials
ResumoA novel hierarchically N-doped carbon coated MoS2 microflower assembled with nanosheets is synthesized via a SiO2-templete assisted hydrothermal method. Differing from the traditional synthesis mechanism of the similar micro-/nanostructure, the wrinkled 2D MoS2 grains grow in the pore of the assembled SiO2 aggregates with squeezing action. In the designed macro-/nanostructure, the interconnected network of carbon coated nanosheets increases surface area and decreases transfering resistance for ions and electrons, which is beneficial to conductivity and total electrode capability. The self-supported structure alleviates volume change and improves cycling stability. This synthesized MoS2@NC exhibits high capacity and remarkable cycling stability. It shows initial capacity of 1103.6 mAh g−1 and maintains a reversible capacity of 786.4 mAh g−1 after 50 cycles at 0.1 A g−1.
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