喷雾干燥法制备LiCoO_2超细粉  

Synthesis of Ultrafine LiCoO 2 Powders by Spray Drying Method

作　　者：李阳兴[1] 姜长印[1] 万春荣[1] 朱永 

机构地区：[1]清华大学核能技术设计研究院,北京100084

出　　处：《无机材料学报》1999年第4期657-661,共5页Journal of Inorganic Materials

摘　　要：本文研究了一种新型的制备锂离子电池正极材料的工艺方法通过喷雾干燥法制备出 Ｌｉ Ｃｏ Ｏ２超细粉试验中， 进行了混合粉体的 Ｄ Ｔ Ａ Ｔ Ｇ Ａ 分析； Ｘ Ｒ Ｄ 谱分析显示， 所得 Ｌｉ Ｃｏ Ｏ２ 为具有α Ｎａ Ｆｅ Ｏ２ 层状结构的 Ｈ Ｔ Ｌｉ Ｃｏ Ｏ２ ； 从 Ｓ Ｅ Ｍ 照片可见， Ｌｉ Ｃｏ Ｏ２ 粉末元素分布均匀， 粒径为几百纳米；电化学性能测试结果表明， 其充电容量为１４８ｍ Ａ·ｈｇ ， 放电容量为１３５ｍ Ａ·ｈｇ，A novel technique was studied to prepare cathode materials for lithium ion battery Ultrafine LiCoO 2 powders were synthesized by a spray drying method DTA/TGA were employed to analyze the mixed powders XRD results show that the prepared LiCoO 2 is HT LiCoO 2 which has α NaFeO 2 structure type SEM photographs show that the powders are homogeneous with grain size of hundreds of nanometer Electrochemical property experiments testify that the powders have excellent electrochemical properties with initial charge capacity of 148mAh/g and discharge capacity of 135mAh/g Its prospect of industrialization is attractive

关 键 词：LICOO2 喷雾干燥法 超细粉 锂电池 正极材料 

分 类 号：TM912.03[电气工程—电力电子与电力传动]