锂离子电池正极材料LiFePO_4的湿化学合成研究进展  

Advances in Wet-chemical Synthesis of LiFePO_4 as a Cathode Material of Lithium Ion Batteries

作　　者：李运姣[1] 洪良仕[1] 习小明[2] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083 [2]长沙矿冶研究院,湖南长沙410012

出　　处：《矿冶工程》2005年第4期58-61,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(50474048);教育部新世纪优秀人才支持计划资助

摘　　要：评述了乳化干燥法、共沉淀法、Sol gel法及水热法等湿化学法合成LiFePO4的研究进展。乳化干燥法具有原料来源广,产物电化学性能优良,制备方法简单等优点;共沉淀法具有反应时间短,能耗低,产物性能好等优点,但原料的选择有一定的限制;Sol gel法具有纯度高、颗粒细等优点,其主要不足为凝胶干燥时收缩性大,粉体材料的烧结性不好;水热法具有原料来源广泛,制备工艺简单,流程短,操作容易,易实现工业化等优点,是值得进一步研究的制备方法。A review is made of the advance in research work on synthesization of LiFePO4 using wet chemical methods, such as emulsion drying, co-precipitation, Sol-gel process and hydrothennal method. The emulsion drying method has the advantages of extensive availability of raw materials, excellent electrechemical performance of products and simple preparation method. The co-precipitation process has the advantages of short reaction time, low energy consumption and good product performance, but is limited in selection of raw materials. The Sol-gel process is characterized by higher purity and smaller size products, but its disadvantages are as follows：great shrinkage during Sol-gel drying and poor sintering property of powdered materials. The hydrothennal method is a preparation method which is worth further studying due to its wide availability of raw materials, simple preparation technology, short flowsheet, ease operation and ease industrialization.

关 键 词：锂离子电池 湿化学合成 正极材料 LIFEPO4 

分 类 号：TM912.9[电气工程—电力电子与电力传动]