摘要
本文利用γ-射线还原制备氧化亚锰／石墨烯复合材料．该实验方法能够在不添加表面活性剂的条件下获得在溶剂中均匀稳定分散的氧化亚锰／石墨烯复合材料其中氧化亚锰纳米粒子的生长速度可控制在0．8nm／h，因此可在避免表面活性剂的情况下实现氧化亚锰颗粒在石墨烯表面的尺寸调控和均匀分散．这些结构特征使得γ-射线还原法制备的氧化亚锰／石墨烯复合材料在用作储锂负极材料时展现出优异的倍率性能：2分钟充电可以获得高达546mA·h／g的质量比容量（相对复合材料质量）．
We report a γ-ray irradiation reduction method to prepare MnO/reduced graphene oxide （rCO） nanocomposite for the anode of lithium ion batteries. γ-Ray irradiation provides a clean way to generate homogeneously dispersed MnO nanoparticles with finely tuned size on rGO surface without the use of surfactant. The MnO/rGO composite enables a fully charge/discharge in 2 min to gain a reversible specific capacity of 546 （mA-h）/g which is 45 higher than the theoretical value of commercial graphite anode.
基金
This work was supported by the National Natural Science Foundation of China （No.21373197）, the 100 Talents Program of the Chinese Academy of Sciences, USTC Startup and the Fundamental Research Funds for the Central Universities （WK2060140018）.
关键词
γ-射线还原
氧化哑锰负极
石墨烯
纳米复合材料
锂离予电池
γ-Ray irradiation reduction, MnO anode, Reduced graphene oxide, Nanocomposites, Lithium ion batteries
