用于提纯银的配方及其快速湿法银提纯方法.pdf

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第 29卷第 1期硅酸盐通报 Vol. 29 No. 1
2010年 2月 BULLETIN OF THE CH INESE CERAM IC SOC IETY February, 2010
磷酸铁锂制备工艺及研究进展
周文彩,李金洪,姜晓谦
(中国地质大学(北京)材料科学与工程学院,北京 100083)
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摘要:橄榄石型磷酸铁锂(L iFePO4 )作为一种新型锂电池正极材料,因其原料来源丰富、价廉、无毒、理论容量高、热
稳定性好以及循环性能好等优点近几年备受关注,是下一代锂离子电池的首选材料。本文简要介绍了磷酸铁锂的
橄榄石型结构和电化学性能,比较了不同的制备工艺及方法,并针对其电导率低的缺点对目前采用的改性工艺作
了总结。
关键词:磷酸铁锂; 结构; 性能; 制备工艺; 改性
中图分类号: O646 文献标识码: A 文章编号: 1001 1625 (2010) 01 0133 05
Prepara tion and Research Progress of L i FePO 4 Ca thode M a ter ia l
ZHOU W en cai, L I J in hong, J IAN G X iao qian
( School ofMaterials Science and Technology, China University of Geosciences, Beijing 100083, China)

Abstract: O livine structure L iFePO4 as a p rom ising cathode material attracted much attention because of
its advantage, such as rich source of cheap raw materials, non toxic, high theoretical capacity, thermal
stability and good cycling performance. Therefore L iFePO4 is the p referred material of the next generation
of lithium ion battery. Here olivine type structure and electrochem ical performance of L iFePO4 are
p resented briefly, while the p reparation and modification aimed at the low electronic conductivity are
described in detail.
Key words: lithium iron phosphate; structure; performance; p reparation; modification
1 引言
锂离子电池作为一种高性能的二次绿色电池,具有高电压、高能量密度(包括体积能量、质量比能量) 、
低的自放电率、宽的使用