This paper studies in-situ synthesis of Fe₂O₃/reduced graphene oxide (rGO) anode materials by different hydrothermal process.Scanning Electron Microscopy (SEM) analysis has found that different processes can control the morphology of graphene and Fe₂O₃. The morphologies of Fe₂O₃ prepared by the hydrothermal in-situ and oleic acid-assisted hydrothermal in-situ methods are mainly composed of fine spheres, while PVP assists The thermal in-situ law presents porous ellipsoids. Graphene exhibits typical folds and small lumps. X-ray diffraction analysis (XRD) analysis results show that Fe₂O₃/reduced graphene oxide (rGO) is generated in different ways. Also, the material has good crystallinity, and the crystal form of the iron oxide has not been changed after adding GO. It has been reduced, and a characteristic peak appears around 25°, indicating that a large amount of reduced graphene exists. The results of the electrochemical performance tests have found that the active materials prepared in different processes have different effects on the cycle performance of lithium ion batteries. By comprehensive comparison for these three processes, the electro-chemical performance of the Fe₂O₃/rGO prepared by the oleic acid-assisted hydrothermal method is best.

中文翻译：

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使用不同水热方法原位合成Fe2O3 / rGO作为锂离子电池的负极材料

本文研究了不同水热法原位合成Fe ₂ O ₃ /还原石墨烯（rGO）阳极材料的研究。扫描电子显微镜（SEM）分析发现，不同的工艺可以控制石墨烯和Fe ₂ O ₃的形貌。水热原位法和油酸辅助水热原位法制备的Fe ₂ O ₃的形貌主要由细球组成，而PVP辅助。热原位法呈现多孔椭圆体。石墨烯表现出典型的褶皱和小团块。X射线衍射分析（XRD）分析结果表明Fe ₂ O ₃还原氧化石墨烯（rGO）的生成方式不同。而且，该材料具有良好的结晶度，并且在添加GO之后氧化铁的晶形没有改变。它已被还原，并且特征峰出现在25°左右，表明存在大量还原的石墨烯。电化学性能测试的结果发现，以不同的方法制备的活性材料对锂离子电池的循环性能具有不同的影响。通过对这三个过程的综合比较，油酸辅助水热法制备的Fe ₂ O ₃ / rGO的电化学性能最佳。