公开(公告)号：US09806341B2

公开(公告)日：2017-10-31

申请号：US14707986

申请日：2015-05-08

申请人： Samsung SDI Co., Ltd.

发明人： Daehoe Lee ,  Sangwoo Cho ,  Sooyoun Park ,  Changwook Kim ,  Dohyung Park

IPC分类号： H01M4/525 ,  C01G51/00 ,  H01M4/505 ,  H01M10/052 ,  H01M4/02

CPC分类号： H01M4/525 ,  C01G51/42 ,  C01G51/66 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/505 ,  H01M10/052 ,  H01M2004/028 ,  Y02T10/7011

摘要： Provided are a positive active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode. The positive active material includes lithium cobalt oxide containing a metal element, and the lithium cobalt oxide containing a metal element has a ratio of a peak intensity of the O3 phase to a peak intensity of the H1-3 phase, IO3/IH1-3, that is greater than 1 in a X-ray diffraction (XRD) analysis spectrum using Cu-Kα radiation. Accordingly, a lithium secondary battery including the positive active material may have improved lifespan characteristics even at a high voltage.

公开(公告)号：US20160156032A1

公开(公告)日：2016-06-02

申请号：US14707986

申请日：2015-05-08

申请人： Samsung SDI Co., Ltd.

发明人： Daehoe Lee ,  Sangwoo Cho ,  Sooyoun Park ,  Changwook Kim ,  Dohyung Park

IPC分类号： H01M4/525 ,  C01G51/00 ,  H01M4/505 ,  H01M10/052 ,  H01M4/485

CPC分类号： H01M4/525 ,  C01G51/42 ,  C01G51/66 ,  C01P2002/50 ,  C01P2002/52 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/505 ,  H01M10/052 ,  H01M2004/028 ,  Y02T10/7011

摘要： Provided are a positive active material, a positive electrode including the same, and a lithium secondary battery including the positive electrode. The positive active material includes lithium cobalt oxide containing a metal element, and the lithium cobalt oxide containing a metal element has a ratio of a peak intensity of the O3 phase to a peak intensity of the H1-3 phase, IO3/IH1-3, that is greater than 1 in a X-ray diffraction (XRD) analysis spectrum using Cu-Kα radiation. Accordingly, a lithium secondary battery including the positive active material may have improved lifespan characteristics even at a high voltage.

摘要翻译： 提供一种正极活性物质，包括该正极活性物质的正极和包含该正极的锂二次电池。 正极活性物质包含含有金属元素的锂钴氧化物，含有金属元素的锂钴氧化物具有O 3相的峰值强度与H1-3相峰值强度的比值，IO3 / IH1-3， 在使用Cu-Kα辐射的X射线衍射（XRD）分析光谱中大于1。 因此，包含正极活性物质的锂二次电池即使在高电压下也可具有改善的寿命特性。

公开(公告)号：US20160028078A1

公开(公告)日：2016-01-28

申请号：US14690276

申请日：2015-04-17

申请人： SAMSUNG SDI CO., LTD.

发明人： Jihyun Kim ,  Hyunjoo Je ,  Changwook Kim ,  Yongchan You

IPC分类号： H01M4/36 ,  H01M10/052 ,  H01M4/58 ,  H01M4/525 ,  H01M4/505

CPC分类号： H01M4/366 ,  H01M4/131 ,  H01M4/136 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028 ,  Y02T10/7011

摘要： A composite positive electrode active material for a lithium secondary battery including a compound represented by Formula 1 below and a compound represented by Formula 2 below, and a lithium secondary battery employing a positive electrode that includes the composite positive electrode active material: Formula 1 LiaNixCoyMnzM1-x-y-zO2 wherein, in Formula 1, ranges of M, a, x, and y are as defined in the detailed description above, and Formula 2 M1z[M2(CN)6]x·nH2O wherein, in Formula 2, M1, M2, z, x, and n are as defined in the detailed description above.

摘要翻译： 一种锂二次电池用复合正极活性物质，其包含下述式1表示的化合物和下述式2所示的化合物，以及使用正极的锂二次电池，其包含所述复合正极活性物质：式1：LiaNixCoyMnzM1- 其中，在式1中，M，a，x和y的范围如上述详细说明中所定义，而式2 M1z [M2（CN）6] x·nH2O其中，在式2中，M1， M2，z，x和n如上述详细描述中所定义。

公开(公告)号：US11489192B2

公开(公告)日：2022-11-01

申请号：US16630013

申请日：2018-07-10

申请人： SAMSUNG SDI CO., LTD.

发明人： Eunsung Lee ,  Changwook Kim ,  Sangin Park ,  Sooyoun Park ,  Young Jin Park

IPC分类号： H01M4/131 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M50/46 ,  H01M50/449 ,  H01M4/02

摘要： The invention relates to a lithium secondary battery including a positive electrode, a negative electrode including a negative active material, and an electrolyte, wherein the positive electrode includes a first positive active material of a lithium manganese cobalt oxide in Chemical Formula 1, and a second positive active material of a lithium transition metal oxide that occludes and releases lithium ions; an average particle diameter (D50) of the first positive active material is smaller than an average particle diameter (D50) of the second positive active material; and the first positive active material has lower first charge/discharge efficiency than that of the negative active material and has an irreversible capacity during the first charge/discharge that is larger than an irreversible capacity during the first charge/discharge of the negative active material.

公开(公告)号：US10897042B2

公开(公告)日：2021-01-19

申请号：US14690276

申请日：2015-04-17

申请人： SAMSUNG SDI CO., LTD.

发明人： Jihyun Kim ,  Hyunjoo Je ,  Changwook Kim ,  Yongchan You

IPC分类号： H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M10/052 ,  H01M4/131 ,  H01M4/02 ,  H01M4/58 ,  H01M4/136

摘要： A composite positive electrode active material for a lithium secondary battery including a compound represented by Formula 1 below and a compound represented by Formula 2 below, and a lithium secondary battery employing a positive electrode that includes the composite positive electrode active material: LiaNixCoyMnzM1-x-y-zO2  Formula 1 wherein, in Formula 1, ranges of M, a, x, and y are as defined in the detailed description above, and M1z[M2(CN)6]x.nH2O  Formula 2 wherein, in Formula 2, M1, M2, z, x, and n are as defined in the detailed description above.