溶胶-凝胶结合微波法合成LiFePO_4材料的研究  

Synthesis of LiFePO_4 Materials by Microwave Combining with Sol-gel Processing

作　　者：任志国[1] 曾志亮[1] 周建[1] 程吉平[1] 欧阳世翕[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《材料导报》2007年第S2期135-137,共3页Materials Reports

基　　金：国家自然科学基金项目(50472043)资助

摘　　要：用溶胶-凝胶法制备出湿凝胶,然后用微波炉干燥,最后在微波多模腔中合成了LiFePO4材料。讨论了微波合成参数对样品的影响,对样品的形貌作了分析。结果表明,微波合成在高功率下升温速率与低功率下的升温速率的比值远比功率的比值大,制备出的材料微观上团聚具有片状叠加的特征。与其他制备LiFePO4的方法比较,微波合成在时间上具有绝对的优势。The paper introduces microwave processing LiFePO4 material with dried gel by microwave, after producing wet gel by sol-gel. The influence of factors in the microwave processing and the particle morphology of the producer are analysised in the paper. The result shows that the ratio of higher input power and lower one is far below that of temperature rising in the both. The final producer reflects multi-layer sheets superposing and aggregating. Comparing with other processing methods of LiFePO4, microwave processing needs shorter synthesis time.

关 键 词：微波 LiFePO₄ 溶胶-凝胶 

分 类 号：TQ131.11[化学工程—无机化工]