ZnO nanoparticles anchored on nitrogen and sulfur co-doped graphene sheets for lithium-ion batteries applications
| Autor: | Changsheng Liu, Jianzhi Chen, Junyang Tan, Kai An, Linshan Wang, Chuanning Yang, Yongquan Qing, Zefei Zhang |
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| Rok vydání: | 2018 |
| Předmět: |
Thermogravimetric analysis
Nanocomposite Materials science Graphene Scanning electron microscope General Chemical Engineering General Engineering General Physics and Astronomy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Anode Chemical engineering law Hydrothermal synthesis General Materials Science Fourier transform infrared spectroscopy 0210 nano-technology Faraday efficiency |
| Zdroj: | Ionics. 24:3781-3791 |
| ISSN: | 1862-0760 0947-7047 |
| Popis: | Herein, we demonstrate a facile one-step hydrothermal synthesis route to anchor ZnO nanoparticles on nitrogen and sulfur co-doped graphene sheets. The detailed material and electrochemical characterization have been carried out to demonstrate the potential of novel ZnO/NSG nanocomposite in Li-ion battery (LIBs) applications. The structure and morphology of nanocomposite were assessed by X-ray diffraction (XRD), Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The as-synthesized ZnO/NSG nanocomposite has been studied as anode material in LIBs and delivered a high initial discharge capacity of 1723 mAh g−1, at the current density of 200 mA g−1. After 100 cycles, the ZnO/NSG nanocomposites demonstrated a high reversible capacity of 720 mAh g−1 and coulombic efficiency of 99.8%, which can be attributed to the porous three-dimensional network, constructed by ZnO nanoparticles and nitrogen and sulfur co-doped graphene. Moreover, the designed nanocomposite has shown excellent rate capability and lower charge transfer resistance. These results are promising and encourage further research in the area of ZnO-based anodes for next-generation LIBs. |
| Databáze: | OpenAIRE |
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