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利用简单的低温水热法和后续高温煅烧,将Co_3O_4纳米片成功的生长在碳微球表面。X-射线衍射(XRD)和场发射扫描电镜(FE-SEM)测试表明,Co_3O_4纳米片自组装呈疏松状包覆于碳微球表面,纳米片之间相互交织形成三维多孔结构,丰富的孔道极有利于电解质离子在电极材料活性物质中的迁移和渗透。将其作为工作电极,表现出较高的电容性能,电流密度为1A/g时比电容达184F/g,当电流密度达5A/g时电容保持率为82.6%,电极材料具有良好的倍率特性。
Co_3O_4 nanosheets were successfully grown on the surface of carbon microspheres by simple low temperature hydrothermal method and subsequent high temperature calcination. X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) tests showed that Co_3O_4 nanosheets self-assembled loosely coated on the surface of carbon microspheres, nanosheets interwoven to form a three-dimensional porous structure, rich pores Very conducive to electrolyte ions in the electrode material in the migration and penetration of active substances. As the working electrode, the electrode exhibited high capacitance with a specific capacitance of 184F / g at a current density of 1 A / g and a capacitance of 82.6% at a current density of 5 A / g. The electrode material has good rate characteristics .