氧化亚铜/石墨烯纳米复合材料的制备及性能研究

Study on the synthesis and properties of cuprous oxide/graphene nanocomposite material

采用水热法制备氧化亚铜/石墨烯(Cu2O/G)复合材料,以其作为电极片负极组装模拟电池,采用X-射线衍射仪(XRD)及电子扫描电子显微镜(SEM)和透射电子显微镜(TEM)对Cu2O/G复合材料进行了结构和形貌表征.结果表明:制备的Cu2O为立方晶型,而Cu2O与石墨烯复合后仍然保持了原来的晶体结构.Cu2O晶体随着制备条件的变化,晶体形貌发生变化,从球状逐渐变化为立方体状,尺寸逐渐变大;Cu2O/G复合材料中Cu2O呈球状生长在石墨烯表面,分布比较均匀.充放电性能测试表明Cu2O/G复合材料的充放电性能优于Cu2O.

Cuprous oxide/Graphene （CUEO/G） nano composites was prepared by the hydrothermal method and assemblied simulation cell with the Cu2O/G Nanocomposite material as negative electrode. The struc- ture and morphology of Cu2O/G were tested by the X-ray diffraction and scanning electronic microscope, respectively. Moreover, the charge and discharge performance were studied by the charge and discharge tester. After Cu2O was composite with graphene,it original cubic structure was kept. The morphology of the Cu2O,however, was changed from globosity to cubcity with the variation of preparation conditions. The globular CUEO grows well-proportioned on the surface of graphene in the composites of Cu2O/G. The results demonstrated that the graphene could enhance the charge and discharge performance of Cu2O nanomaterial.