公开(公告)号：US20080131780A1

公开(公告)日：2008-06-05

申请号：US11952185

申请日：2007-12-07

Applicant: Takeshi KAWASATO ,  Tokumitsu Kato ,  Naoshi Satio ,  Koji Tatsumi ,  Megumi Uchida ,  Remi Hiraki

Inventor： Takeshi KAWASATO ,  Tokumitsu Kato ,  Naoshi Satio ,  Koji Tatsumi ,  Megumi Uchida ,  Remi Hiraki

IPC: H01M4/48 ,  H01M4/50 ,  H01M4/52

CPC classification number: C01G53/42 ,  C01G45/1221 ,  C01G51/42 ,  C01P2002/52 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/40 ,  H01M4/131 ,  H01M4/1315 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052

Abstract: To provide a process for producing a lithium-containing composite oxide for a positive electrode of a lithium secondary battery, which has a large volume capacity density, high safety, excellent durability for charge and discharge cycles and excellent low temperature characteristics.

Abstract translation: 本发明提供一种锂二次电池正极用含锂复合氧化物的制造方法，其具有体积容量密度大，安全性高，充放电循环耐久性优异，低温特性优异的特征。

公开(公告)号：US20110033749A1

公开(公告)日：2011-02-10

申请号：US12606224

申请日：2009-10-27

Applicant: Megumi UCHIDA ,  Takeshi KAWASATO ,  Remi HIRAKI

Inventor： Megumi UCHIDA ,  Takeshi KAWASATO ,  Remi HIRAKI

IPC: H01B1/08 ,  H01M4/50 ,  H01M4/131 ,  H01M4/58

CPC classification number: H01M4/505 ,  H01M4/1315 ,  H01M4/362 ,  H01M4/485 ,  H01M4/525 ,  H01M10/052 ,  Y10T428/2991 ,  Y10T428/2993

Abstract: To provide a process for producing a surface modified lithium-containing composite oxide, which is excellent in discharge capacity, volume capacity density, safety, durability for charge and discharge cycles and an excellent rate property, at a low production cost. The present invention is characterized in that a process for producing a surface modified lithium-containing composite oxide, wherein a lithium titanium composite oxide is contained in the surface layer of particles of a lithium-containing composite oxide represented by the formula: LipNxMyOzFa, where N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9≦p≦1.3, 0.9≦x≦2.0, 0≦y≦0.1, 1.9≦z≦4.2, and 0≦a≦0.05, which comprises impregnating a solution having a lithium source and a titanium source dissolved therein, followed by heat treatment at a determined temperature, to obtain the surface modified lithium-containing composite oxide, wherein the titanium contained in the surface layer is from 0.01 to 1.95 mol %.

Abstract translation: 为了提供一种生产成本低的放电容量，容量容量密度，安全性，充放电循环的耐久性和优异的速率特性的表面改性的含锂复合氧化物的方法。 本发明的特征在于一种表面改性的含锂复合氧化物的制造方法，其中，在下式表示的锂复合氧化物的表面层中含有锂钛复合氧化物，式中，N表示下式：LipNxMyOzFa，其中N 是选自Co，Mn和Ni中的至少一种元素，M是选自Al，Sn，碱土金属元素和Co，Mn和Ni以外的过渡金属元素中的至少一种元素，0.9 其中包括浸渍溶解有锂源和钛源的溶液，其中包括溶解在其中的锂源和溶解有钛源的溶液，随后 通过在确定的温度下进行热处理，得到表面改性的含锂复合氧化物，其中表面层中所含的钛为0.01〜1.95摩尔％。

公开(公告)号：US20090148772A1

公开(公告)日：2009-06-11

申请号：US12368371

申请日：2009-02-10

Applicant: Takeshi KAWASATO ,  Kazushige Horichi ,  Megumi Uchida ,  Takuya Mihara ,  Naoshi Saito

Inventor： Takeshi KAWASATO ,  Kazushige Horichi ,  Megumi Uchida ,  Takuya Mihara ,  Naoshi Saito

IPC: H01M4/58 ,  B32B5/16 ,  H01M4/50 ,  H01M4/52 ,  C04B35/64

CPC classification number: H01M4/505 ,  C01G51/42 ,  C01G53/42 ,  C01P2002/52 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/12 ,  C04B35/01 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/3275 ,  C04B2235/528 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5463 ,  C04B2235/608 ,  H01M4/1315 ,  H01M4/485 ,  H01M4/525 ,  H01M10/052 ,  Y10T428/2982

Abstract: The present invention provides a lithium-containing composite oxide for a positive electrode for a lithium secondary battery, which has a large volume capacity density and high safety, and excellent durability for charge and discharge cycles and charge and discharge rate property, and its production method.The lithium-containing composite oxide is represented by the general formula LipNxMyOzFa (where N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9≦p≦1.2, 0.965≦x

Abstract translation: 本发明提供一种锂二次电池用正极用锂复合氧化物，其具有体积容量密度大，安全性高，充放电循环耐久性，充放电率特性及其制造方法 。 含锂复合氧化物由通式LipNxMyOzFa（其中N是选自Co，Mn和Ni中的至少一种元素）表示，M是选自Al，Sn，碱性中的至少一种元素 土壤金属元素和除Co，Mn和Ni之外的过渡金属元素，0.9 <= p <= 1.2,0.965 <= x <2.00,0