电化学2012，Vol.18Issue(1)：18-23,6.
有机模板剂辅助喷雾干燥法制备LiFePO4/C正极材料及其电化学性能研究
Preparation and Electrochemical Performance of LiFePO4/C by Spray Drying Method Assisted with Organic Template
摘要
Abstract
In this work, the LiFePO4/C composites were prepared by the spray drying and carbothermal method, and were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, cyclic voltammetry （CV）, electrochemical impedance spectroscopy （EIS）, and galvanostatic charge-discharge measurements. The effects of the organic assisted templates on the morphologies and electrochemical properties of the LiFePO4/ C composites were investigated. The results showed that the morphology and microstructure of the composites could be tuned by incorporating With the different templates. The morphology of the .composite appeared to be solid microspheres if no organic template was added, while porous microspheres, nest-like aggregation, and uniform nano-micro spheres,if citric acid,glucose and polyvinyl alcohol（PVA） were used as the templates,respectively. Among all the samples, the composite prepared with PVA as a template also exhibited the best properties in batteries, including the highest tap density, the lowest charge transfer resistances and the highest capacities. The best discharge capacities were measured to be 156.7 and 92.1 mAh · g-1 at 0.1 and 5.0C rate,respectively. The ob- vious charge-discharge plateaus at high rates and excellent cycling performance at various rates were achieved.关键词
正极材料/喷雾干燥/辅助模板/聚乙烯醇Key words
cathode materials/spray drying/assisted template/polyvinyl alcohol分类
化学化工引用本文复制引用
刘全兵,蒋阳梅,宋慧宇,廖世军..有机模板剂辅助喷雾干燥法制备LiFePO4/C正极材料及其电化学性能研究[J].电化学,2012,18(1):18-23,6.基金项目
国家自然科学基金（No.20876062,No.21076089）资助 （）
