通过溶剂热的方法合成了石墨烯-镍铁氧体纳米复合材料(NFR).采用X射线衍射仪(XRD)、拉曼光谱仪(Raman)、傅立叶红外光谱仪(FT-IR)以及透射电镜(TEM)等仪器对样品的形貌和结构进行了表征,并将其作为锂离子电池负极材料组装成模拟电池,考察其电化学性能.测试结果表明:NFR纳米复合材料在100mA·g-1电流密度首圈放电比容量高达1223mAh·g-1,首次可逆比容量为830mAh·g-1,100圈充放电后,容量几乎无衰减,保持较好的循环稳定性.这种优异的性能归功于复合材料中镍铁氧体和石墨烯之间的协同作用.
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