Boosting lithium storage by facile functionalization of graphene oxide nanosheets via 2-aminoanthraquinone
| Autor: | Yuling Xu, Zhengzhong Zhang, Chaofeng Zhang, Pengpeng Chen, Wenjie Tao, Hongjian Yu, Mengdan Hu, Xiaolong Fu |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Nanocomposite Graphene Oxide 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Dielectric spectroscopy law.invention chemistry.chemical_compound X-ray photoelectron spectroscopy Chemical engineering chemistry law Surface modification General Materials Science Cyclic voltammetry Fourier transform infrared spectroscopy 0210 nano-technology |
| Zdroj: | Carbon. 171:104-110 |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2020.08.064 |
| Popis: | In this work, we reported a novel and facile procedure for the functionalization of graphene oxide (GO) by using 2-aminoanthraquinone (AAQ), with a structure of AAQ molecules covalently grafted onto GO sheets. The as-prepared nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscope (TEM), galvanostatic measurements, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Amazingly, the AAQ modified GO nanosheets showed an improved electrochemical performance, in terms of cycling performance and rate capability. Specifically, the nanosheets exhibited a high capacity of 467 mA h g−1 at a current density of 5 A g−1, and a specific capacity of 866 mAh g−1 after 500 cycles at 500 mA g−1. |
| Databáze: | OpenAIRE |
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