三维Fe2O3纳米材料的设计合成及电化学性能研究

Designing synthesis and electrochemical performance of 3D Fe2O3 nanomaterial

以硝酸铁、磷酸二氢钾为原料,通过溶剂热法制备出三维Fe2O3(三氧化二铁)纳米材料。采用扫描电子显微镜、透射电子显微镜、X射线衍射仪对Fe2O3纳米材料的微观形貌、物相结构进行了分析。结果表明:Fe2O3纳米材料为六方相晶体结构,结晶性能良好,其三维纳米盘状结构由粒径较小的晶粒堆砌而成。电化学性能测试结果显示,三维Fe2O3纳米材料具有良好的锂离子电池循环稳定性,循环100圈后,放电比容量仍高达800.5mAh/g,高放电比容量与材料稳定的三维纳米盘状结构有关。

3D Fe2O3 nanomaterial was synthesized via solvent-thermal method using ferric nitrate and monopotassium phosphate as raw materials.Then SEM,TEM and XRD analysis were applied to research microscopic morphology and structure of the products.The results were as follows:Fe2O3 nanomaterial was pure Fe2O3 with rhombohedral hexahedron crystal structure and high crystallity.The 3D structure was constructed with little nanoparticles.Results of electrochemical performance test showed that Fe2O3 nanomaterial had excellent lithium ion battery cyclic stability.And the discharge capacity was 800.5 mAh/g after 100 cycles.The steady electrochemical performance attributed to stable 3D nanoplate structure.