Abstract 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.

中文翻译：

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通过 2-氨基蒽醌对氧化石墨烯纳米片的简便功能化促进锂存储

摘要 在这项工作中，我们报道了一种使用 2-氨基蒽醌 (AAQ) 对氧化石墨烯 (GO) 进行功能化的新颖且简便的程序，其 AAQ 分子的结构共价接枝到 GO 片上。所制备的纳米复合材料通过傅里叶变换红外光谱 (FTIR)、X 射线光电子能谱 (XPS)、X 射线衍射 (XRD)、透射电子显微镜 (TEM)、恒电流测量、循环伏安法 (CV) 和电化学阻抗谱 (EIS)。令人惊讶的是，AAQ 改性的 GO 纳米片在循环性能和倍率性能方面表现出改善的电化学性能。具体而言，纳米片在 5 A g-1 的电流密度下表现出 467 mAh g-1 的高容量，在 500 mA g-1 下循环 500 次后比容量为 866 mAh g-1。