湿法机械活化法提高磷酸铁锂均一性的实验研究  

Experimental Study on Improving Homogeneity of Lithium Ion Phosphate through Mechanic Activation with Wet Mixture

作　　者：李华成 钟胜奎[2] 陈平 李普良 王春飞 唐跃波 

机构地区：[1]中信大锰矿业有限责任公司,广西南宁530028 [2]苏州大学沙钢钢铁学院,江苏苏州215021

出　　处：《矿冶工程》2012年第4期97-100,共4页Mining and Metallurgical Engineering

基　　金：广西科学研究与技术开发计划(桂科攻11107019-2)

摘　　要：采用湿法机械活化混料、喷雾干燥、固相烧结法制备了磷酸铁锂。实验结果表明,在合适的球料比、液固比下,经过3 h机械活化的物料烧结后,产品的0.2C首次放电容量为151.8 mAh/g,30次循环衰减为0.80%,明显优于干法混料产品的电性能。Lithium iron phosphate was prepared with wet mixture through mechanical activation, spray drying and solid- state sintering processes. Test results showed that with proper ball to powder weight ratio and liquid-solid ratio, the material being mechanically activated for 3 hours and subjected to sintering process, resulted in a product with the first discharge capacity of 151.8 mAh/g at 0.2C, with an attenuation rate of 0.80% after 30 cycles, which is obviously better than the product obtained with dry mixture in terms of electrical properties.

关 键 词：锂离子电池 正极材料 磷酸铁锂 均一性 机械活化 固相烧结 电性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]