过氧钼酸溶胶制备的MoO_3纳米带及其电化学性能研究  

Synthesis and Electrochemical Property of MoO_3 Nanobelts from Peroxomolybdic Acid Sols

作　　者：祁琰媛[1] 陈文[1] 麦立强[1] 胡彬[1] 金伟[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《稀有金属》2007年第1期67-71,共5页Chinese Journal of Rare Metals

基　　金：国家自然科学基金资助项目(50672071;50672072)

摘　　要：以过氧钼酸溶胶为反应前驱体采用简单的水热方法,在没有任何模板剂的条件下合成三氧化钼纳米带,通过XRD,SEM,TEM和IR等测试方法对产物进行结构表征和形貌分析。结果表明,MoO3纳米带的宽度为100-500 nm,平均厚度为70 nm,长度可达十几μm;其电化学实验结果表明,MoO3纳米带的首次放电比容量可达310 mAh.g-1,循环10次后其放电比容量为265 mAh.g-1,容量保持率达85.5%,循环性能优良。Synthesis of MoO3 nanobelts with no template via a simple hydrothermal method from peroxomolybdic acid sols was reported. The morphology and structure of the sample were characterized by XRD, SEM, TEM and IR. The results indicate that the samples are α-MoO3 nanobelts with the thickness of 40 ～ 90 nm and with length up to 15 μm, and the nanobehs are single crystals elongated preferentially in the [ 001] direction. Investigation on the electrochemical performance of MoO3 nanobehs used as the positive-electrode materials was conducted. The results show that the samples have higher capacity （310 mAh·g^-1） and better reversibility.

关 键 词：三氧化钼 溶胶 纳米带 电化学性能 

分 类 号：O611.4[理学—无机化学]