POSITIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY CELL

    公开(公告)号:CA2496374A1

    公开(公告)日:2005-08-16

    申请号:CA2496374

    申请日:2005-02-07

    Applicant: SONY CORP

    Inventor: HOSOYA YOSUKE

    Abstract: A non-aqueous electrolyte secondary cell is provided having superior high temperature-operation properties and excellent large current-discharge properties. The non-aqueous electrolyte secondary cell has a positive electrode composed of a positive electrode collector and positive electrode active material layers formed thereon. A positive electrode active material contained in the above layer is formed of a first composite oxide and a second composite oxide mixed therewith. The first composite oxide is formed of grains of a first lithium transition metal composite oxide containing at least nickel as a transition metal and a cover layer formed on at least part of the surface of each of the grains for suppressing decomposition of an electrolyte caused by the first lithium transition metal composite oxide. The second composite oxide is composed of grains of a second lithium transition metal composite oxide.

    POSITIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY CELL

    公开(公告)号:CA2496374C

    公开(公告)日:2010-11-02

    申请号:CA2496374

    申请日:2005-02-07

    Applicant: SONY CORP

    Inventor: HOSOYA YOSUKE

    Abstract: A non-aqueous electrolyte secondary cell is provided having superior high temperature-operation properties and excellent large current-discharge properties. The non-aqueous electrolyte secondary cell has a positive electrode composed of a positive electrode collector and positive electrode active material layers formed thereon. A positive electrode active material contained in the above layer is formed of a first composite oxide and a second composite oxide mixed therewith. The first composite oxide is formed of grains of a first lithium transition metal composite oxide containing at least nickel as a transition metal and a cover layer formed on at least part of the surface of each of the grains for suppressing decomposition of an electrolyte caused by the first lithium transition metal composite oxide. The second composite oxide is composed of grains of a second lithium transition metal composite oxide.

    Negative-electrode active material, manufacturing method thereof, lithium ion battery, battery pack, electronic device, electrically-powered vehicle, power storage device, and electric power system
    8.
    发明专利
    Negative-electrode active material, manufacturing method thereof, lithium ion battery, battery pack, electronic device, electrically-powered vehicle, power storage device, and electric power system 审中-公开
    负极活性材料,其制造方法,锂离子电池,电池组,电子设备,电动车,蓄电装置和电力系统

    公开(公告)号:JP2014022041A

    公开(公告)日:2014-02-03

    申请号:JP2012156111

    申请日:2012-07-12

    CPC classification number: Y02E60/122 Y02P70/54 Y02T10/7011

    Abstract: PROBLEM TO BE SOLVED: To provide a negative-electrode active material for nonaqueous electrolytic secondary batteries which allows the achievement of a high level both in battery property and input property.SOLUTION: The negative-electrode active material for nonaqueous electrolytic secondary batteries comprises a complex graphite material. The complex graphite material includes a spherical graphite material having a lithium-occludable titanium-containing inorganic oxide on its surface and thereinside; the titanium-containing inorganic oxide is present in a range from the surface of the graphite material to a depth as deep as 4% or more of the average particle diameter of the graphite material when observed by means of element mapping on a cross section of the graphite material. The complex graphite material is produced by: impregnating a spheroidized natural graphite with a liquid solution containing a titanium-containing organic compound and a solvent under a negative pressure environment; then removing the solvent to prepare a precursor with the titanium-containing organic compound present on the surface of and inside the spheroidized natural graphite; and sintering the precursor. Alternatively, the complex graphite material may be produced by: impregnating a graphite material composed of a scale-like or bulk natural graphite with a liquid solution containing a titanium-containing organic compound and a solvent; then removing the solvent; spheroidizing the graphite material with the titanium-containing organic compound deposited on its surface to prepare a precursor; and sintering the precursor.

    Abstract translation: 要解决的问题:提供一种非水电解质二次电池用负极活性物质,其能够实现电池性能和输入性能的高水平。解决方案:非水电解二次电池用负极活性物质包括络合物 石墨材料。 复合石墨材料包括在其表面上具有含锂可吸收的含钛无机氧化物的球形石墨材料; 含钛无机氧化物存在于从石墨材料的表面到深度为石墨材料的平均粒径的4%以上的深度的范围内,当通过在 石墨材料。 复合石墨材料通过在负压环境下用含有钛化合物和溶剂的液体溶液浸渍球状天然石墨来制造; 然后除去溶剂以制备前体,其中存在于球化天然石墨表面和内部的含钛有机化合物; 并烧结前体。 或者,复合石墨材料可以通过以下方法制造:用包含含钛有机化合物和溶剂的液体溶液浸渍由鳞状或块状天然石墨构成的石墨材料; 然后除去溶剂; 用沉积在其表面上的含钛有机化合物球化石墨材料以制备前体; 并烧结前体。

    Positive electrode active material, positive electrode, and nonaqueous electrolyte battery
    10.
    发明专利
    Positive electrode active material, positive electrode, and nonaqueous electrolyte battery 有权
    正极电极活性材料,阳极电极和非电解电解质电池

    公开(公告)号:JP2011028976A

    公开(公告)日:2011-02-10

    申请号:JP2009172968

    申请日:2009-07-24

    Abstract: PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery endowed with both high battery capacity and charge and discharge cycle characteristics. SOLUTION: The nonaqueous electrolyte battery is produced by using a positive electrode active material wherein at least one kind of a metal element M1 different from a primary transition metal element A exists on at least a part of the surface of lithium-containing transition metal oxide including the primary transition metal element A and a compound of a metal element M2 different from the metal element M1 is adhered to at least a part of the surface of lithium-containing transition metal oxide including the primary transition metal element A or a compound of the metal element M2 different from the metal element M1 exists in the vicinity of the lithium-containing transition metal oxide. It is preferable that a whole composition of the positive electrode active material has a relationship of 0.001 COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题:提供具有高电池容量和充放电循环特性的非水电解质电池。 解决方案:通过使用正极活性物质制造非水电解质电池,其中至少一种不同于一级过渡金属元素A的金属元素M1存在于含锂过渡层的至少一部分表面上 包含一次过渡金属元素A的金属氧化物和与金属元素M1不同的金属元素M2的化合物被粘附到包含一次过渡金属元素A或化合物的含锂过渡金属氧化物的表面的至少一部分 与金属元素M1不同的金属元素M2存在于含锂过渡金属氧化物附近。 正极活性物质的整体组合物优选的原子比为0.001 <金属元素M1 /(金属元素M1 +初级过渡金属元素A)<0.2的关系。 此外,金属元素M2的化合物优选为金属盐,金属氧化物或金属卤化物。 金属元素M2的一次过渡金属元素A的组成与金属元素M2的化合物是金属盐,金属氧化物还是金属卤化物不同。 版权所有(C)2011,JPO&INPIT

Patent Agency Ranking