Synthesis of LiV3O8 Crystallites via an Improved Citric Acid Assisted Sol-Gel Method

摘要：

　　LiV3O8 crystallites were synthesized via a combined ultrasonic irradiation and sol-gel method.The as-prepared LiV3O8 powders were characterized by X-ray diffraction (XRD),field emission scanning electron microscopy (FE-SEM),Fourier transform infrared (FT-IR) absorption spectra.The thermal decomposition process was investigated using thermogravimetric (TG) and differential scanning calorimetry (DSC).The effects of molar ratios of metal ion/citric acid and calcination temperatures on phases and microstructure of the powders were investigated.Results indicate that calcination temperatures have significant influence on the particle morphology,particle size and particle size distribution of the powders.The pure and rod-like LiV3O8 powders with an average size of 0.2-1 μm were obtained at 350 and 400 ℃.With the increase of calcination temperature,the powders exhibit preferred growth orientation along (100) planes.The crystallites obtained at 550 and 600 ℃ are composed by LiV3O8 with a small amount of Li0.3V2O5 phase,both of which exhibit tabular morphologies with an average size of 2-10 μm.

关键词： Lithium trivanadate Sol-gel process Ultrasonic irradiation Structure and morphology

作者: Wang Dun-qiang Cao Li-yun Huang Jian-feng Wu Jian-peng

作者单位: Key Laboratory of Auxiliary Chemistry & Technology for Light Chemical Industry,Ministry of Education,Shaanxi University of Science & Technology,Xian Shaanxi 710021,China

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 227-230

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）