公开(公告)号：US20180062172A1

公开(公告)日：2018-03-01

申请号：US15685334

申请日：2017-08-24

申请人： SAMSUNG SDI CO., LTD.

发明人： Sooyoun PARK ,  Changwook KIM ,  Yongchan YOU ,  Daehoe LEE ,  Sangwoo CHO

IPC分类号： H01M4/525 ,  C01G51/00 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/1391

CPC分类号： H01M4/525 ,  C01G51/42 ,  C01G51/66 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/362 ,  H01M4/505 ,  H01M4/5815 ,  H01M4/5825 ,  H01M10/0525

摘要： A positive active material, a positive electrode, and a lithium secondary battery, the positive active material including a lithium cobalt oxide compound, wherein the lithium cobalt oxide compound includes magnesium in a range of about 0.1 mol % to about 2 mol %, based on a total number of moles of transition metals in the lithium cobalt oxide compound, and a thickness of a lithium layer in the lithium cobalt oxide compound is in a range of about 2.62 Å to about 2.65 Å.

公开(公告)号：US20160156028A1

公开(公告)日：2016-06-02

申请号：US14739124

申请日：2015-06-15

申请人： SAMSUNG SDI CO., LTD.

发明人： Hyunjoo JE ,  Jihyun KIM ,  Changwook KIM ,  Yongchan YOU

IPC分类号： H01M4/36 ,  H01M4/58 ,  H01M4/505 ,  H01M4/525 ,  H01M4/136 ,  H01M4/131

摘要： Provided are a positive active material, lithium batteries including the positive active material, and a method of preparing the positive active material. The positive electrode active material, includes a core including a compound capable of reversibly performing intercalation or deintercalation of lithium ions; and a coating layer including an inorganic material adhered to at least a portion of a surface of the core, the inorganic material having an apatite structure.

摘要翻译： 提供正极活性物质，包括正极活性物质的锂电池和制备正极活性物质的方法。 正极活性物质包括含有能够可逆地进行锂离子的插入或脱嵌的化合物的核心; 以及包含粘附到芯的表面的至少一部分的无机材料的涂层，所述无机材料具有磷灰石结构。

公开(公告)号：US20180102537A1

公开(公告)日：2018-04-12

申请号：US15722953

申请日：2017-10-02

申请人： Samsung SDI Co., Ltd.

发明人： Jihyun KIM ,  Changwook KIM ,  Sooyoun PARK ,  Kyouyoon SHEEM ,  Hyunjoo JE

IPC分类号： H01M4/485 ,  H01M4/38 ,  H01M4/134

CPC分类号： H01M4/485 ,  C01G23/047 ,  C01G51/42 ,  C01P2002/50 ,  C01P2002/54 ,  C01P2004/03 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/82 ,  H01M2/263 ,  H01M4/131 ,  H01M4/134 ,  H01M4/366 ,  H01M4/386 ,  H01M4/62 ,  H01M4/623 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028

摘要： A positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The positive active material includes a lithium intercalation compound and a Si-containing TiO2 present on the surface of the compound. When TiO2 is present on the surface of the lithium intercalation compound, the rate characteristics and low temperature characteristics of batteries including the lithium intercalation compound may be improved. Further, when Si-containing TiO2 is present on the surface of the lithium intercalation compound, the cycle-life characteristic and high temperature storage characteristics of batteries including the lithium intercalation compound may be further improved, compared to batteries having only TiO2. As such, the positive active material including Si-containing TiO2 provides a rechargeable lithium battery having excellent rate capability, low temperature characteristics, cycle-life characteristics and high temperature storage characteristics.