Effect of Carbonaceous materials on the ElectroChemical Performance of Fe_2O_3/C as an Anode Material for Lithium-ion Secondary Batteries

摘要

The iron oxide anode materials have attracted widespread attention in lithium-ion battery research field. The Fe_2O_3/C composite was synthesized via hydrothermal method and characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The XRD confirmed that the main crystallization phases of materials were Fe_2O_3. The Fe_2O_3/AC powders showed very uniform cube between 1 and 2μm. Fe_2O_3/CNTs composites acted as a three-dimensional network wiring to connect Fe_2O_3 spheres. The electroChemical investigation indicated that the electroChemical performance of Fe_2O_3/CNTs materials shows a high specific capacity and an excellent cycling stability. The first reversible capacity of samples was 808.8 mAhg~(-1) at the current density of 100mAg~(-1) between 0.01 and 2.5 V vs. Li/Li~+.