水热法合成α-Fe2O3纳米晶作为锂离子电池负极材料的研究  

Hydrothermal Synthesis of α-Fe2O3 Nanocrystals as Anode Electrode Materials for Rechargeable Li-ion Batteries

作　　者：娄晓明[1] 黄佳丽[2] 李坦平[1] 胡汉祥[1] 胡波年[1] 

机构地区：[1]湖南工学院材料与化学工程学院建筑材料研究所,湖南衡阳421002 [2]湖南工学院建筑与艺术设计学院,湖南衡阳421002

出　　处：《纳米科技》2014年第5期43-46,共4页

摘　　要：以FeCl3为铁源，油酸和NaOH为表面活性剂，乙醇为还原剂，在水热条件下于180℃反应10h，合成了α-Fe2O3（hematite）纳米晶，对产物进行X射线衍射（XRD）和透射电镜（TEM）分析，结果表明，该产物纯度较高，平均粒径约为20nm。将该产物作为锂离子电池负极材料并组装为锂离子电池后进行充放电性能测试，发现其首次放电曲线比较特殊，且容量达到1280mAhg^-1，使得该材料成为潜在的锂离子电池负极材料。Taken FeCl3, oleie acid, ethanol and NaOH as raw materials to synthesized α-Fe2O3 nanocrystals by hydrothermal method at 180℃ for 10h. The samples were characterized by X-ray powder diffraction （XRD） and transmission electron microscopy （TEM） for the information of crystal category, form and size. The results showed the materials were nanocubes and side-length about 20 nm. Moreover, the properties of α-Fe2O3 nanocrystals as anode materials for Li-ion batteries were studied. The first- discharge capacity was 1280 mAh g^-1, which made the material to be one of the candidates for the negative materials.

关 键 词：水热法合成 Α-FE2O3 纳米晶 负极材料 锂离子电池 

分 类 号：TB34[一般工业技术—材料科学与工程]