公开(公告)号：US20120256123A1

公开(公告)日：2012-10-11

申请号：US13524573

申请日：2012-06-15

申请人： Jaephil CHO ,  Youn-Han CHANG ,  Sang-Hoon JEON ,  Hyun-Jung LEE

发明人： Jaephil CHO ,  Youn-Han CHANG ,  Sang-Hoon JEON ,  Hyun-Jung LEE

IPC分类号： H01M4/525

CPC分类号： H01M4/5825 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

摘要： The present invention relates to a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. More particularly, the present invention relates to a positive active material for a rechargeable lithium battery including a compound that can reversibly intercalate/deintercalate lithium and a lithium metal phosphate produced through binding with lithium of the compoound, the lithium metal phosphate existing from the surface of the compound to a predetermined depth, a method of preparing the positive active material, and a rechargeable lithium battery having the positive active material. The positive active material can accomplish excellent cycle-life characteristic and also, suppress battery swelling at a high temperature.

摘要翻译： 本发明涉及一种用于可再充电锂电池的正极活性材料及其制备方法，以及包含该锂二次电池的可再充电锂电池。 更具体地说，本发明涉及一种用于可再充电锂电池的正极活性材料，其包括可逆地插入/脱嵌锂的化合物和通过与所述组合物的锂结合而产生的锂金属磷酸盐，所述锂金属磷酸盐从 化合物至预定深度，制备正极活性物质的方法，以及具有正极活性物质的可再充电锂电池。 正极活性物质可以实现优异的循环寿命特性，并且还抑制高温下的电池膨胀。