多孔Fe2O3纳米棒的制备及其储锂性能的研究  

Preparation of Porous Fe_2O_3 Nanorods for Lithium Ions Batteries with Excellent Electrochemical Performance

作　　者：朱道林[1] ZHU Dao-lin(Division of Science and Technology,Hefei Technology College,Hefei 238000,China)

机构地区：[1]合肥职业技术学院科技处,合肥238000

出　　处：《合肥学院学报（综合版）》2019年第2期79-84,共6页Journal of Hefei University：Comprehensive ED

摘　　要：将液相法结合煅烧制备出一种形貌均一的多孔Fe_2O_3纳米棒。通过XRD、FESEM、TEM和BET对多孔Fe_2O_3纳米棒及其前驱体的形貌和结构进行表征。通过循环伏安、倍率性能、恒流充放电等方法对多孔Fe_2O_3纳米棒的电化学性能进行分析。当多孔Fe_2O_3纳米棒,导电炭黑和粘结剂(CMC+SBR)质量比为6:2:2时,负极表现出最佳的电化学性能。电流密度为200 mAg^(-1),300次循环后,负极材料比容量仍高达984 mAhg^(-1)。优异的电化学性能将使多孔Fe_2O_3纳米棒成为锂离子电池应用中很好的材料。Porous Fe2O3nanorods were obtained using a facile chemical solution method with subsequent calcination.The morphology and structure of porous Fe2O3 nanorods and its precursor were characterized by XRD,FESEM,TEM and BET.The electrochemical properties were investigated by the methods of cyclic voltammetry,rate capability,galvanostatic charge-discharge and AC impedance.The porous Fe2O3 nanorods showed the best electrochemical performance when m (porous Fe2O3 nanorods)∶ m (carbon black)∶ m (CMC+SBR)=6∶ 2∶ 2.The electrode based on porous Fe2O3 nanorods still possess a capacity of 984 mAhg^-1 at the current density of 200 mAg^-1 after 300 cycles.The outstanding electrochemical performance of prepared porous Fe2O3 nanorods is expected to be promising material in the application of lithium ions batteries.

关 键 词：FE2O3 多孔纳米棒 液相合成 煅烧 锂离子电池 

分 类 号：TQ152[化学工程—电化学工业]