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    • 2. 发明专利
    • Negative electrode material for lithium ion secondary battery, negative electrode for lithium ion secondary battery, and lithium ion secondary battery
    • 用于锂离子二次电池的负极电极材料,用于锂离子二次电池的负极和锂离子二次电池
    • JP2012151088A
    • 2012-08-09
    • JP2011208196
    • 2011-09-22
    • Hitachi Chem Co Ltd日立化成工業株式会社
    • KOTADO KATSUNORISUMIYA KEIJIISHII YOSHITO
    • H01M4/587H01M4/36
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To provide a negative electrode material for a lithium ion secondary battery enabling high density and excellent in electrolyte permeability.SOLUTION: A negative electrode material for a lithium ion secondary battery contains a carbon particle group and is in a volumetric cumulative distribution curve from a small diameter side in a particle diameter distribution of the carbon particle group. When first carbon particles represent carbon particles having a particle diameter of 0.9 to 1.1 times a particle diameter D90 at the point where the cumulative percentage is 90%, and second carbon particles represent carbon particles having a particle diameter of 0.9 to 1.1 times a particle diameter D10 at the point where the cumulative percentage is 10%, the ratio (P/P) of the average fracture strength (P) of the second carbon particles to the average fracture strength (P) of the first carbon particles is in the range of 1.7 to 75.
    • 解决的问题:提供一种能够实现高密度和优异的电解质渗透性的锂离子二次电池用负极材料。 解决方案:用于锂离子二次电池的负极材料包含碳颗粒组,并且在碳粒子组的粒径分布中的小直径侧为体积累积分布曲线。 当第一碳颗粒表示在累积百分比为90%时具有粒径为D90的粒径为0.9〜1.1倍的碳粒子,第二碳粒子为碳粒子的粒径为粒径的0.9〜1.1倍 D10在累积百分比为10%的点处,平均断裂强度的比(P D10 / P D90 ) (P D10 )为第一碳粒子的平均断裂强度(P D90 ) 范围为1.7至75.版权所有(C)2012,JPO&INPIT
    • 3. 发明专利
    • Carbon powder for lithium secondary battery negative electrode, method of manufacturing the same, negative electrode for lithium secondary battery, and lithium secondary battery
    • 用于锂二次电池负极的碳粉,其制造方法,用于锂二次电池的负极和锂二次电池
    • JP2011181524A
    • 2011-09-15
    • JP2011126310
    • 2011-06-06
    • Hitachi Chem Co Ltd日立化成工業株式会社
    • ISHII YOSHITONISHIDA TATSUYAFUJITA ATSUSHIYAMADA KAZUO
    • H01M4/587C01B31/04
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To provide a method of manufacturing carbon powder for a lithium secondary battery negative electrode which is superior in cycle characteristics and rapid charge/discharge characteristics with high capacity, provide the carbon material for the lithium secondary battery negative electrode which is superior in the cycle characteristics and the rapid charge/discharge characteristics with high capacity, provide the negative electrode for the lithium secondary battery which is superior in adhesiveness between a current collector and a negative electrode mixture, the cycle characteristics, and the rapid charge/discharge characteristics with high capacity, and provide the lithium secondary battery which is superior in the cycle characteristics and the rapid charge/discharge characteristics with high capacity.
      SOLUTION: The method of manufacturing the carbon powder for the lithium secondary battery negative electrode in which the carbon powder is subjected to the isotropic pressurizing treatment, the carbon powder for the lithium secondary battery negative electrode obtained by the method, the carbon powder prepared by the method or the negative electrode for the lithium secondary battery containing the carbon powder, and the lithium secondary battery having this negative electrode and a positive electrode containing lithium compound are provided.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 解决的问题:为了提供一种制造锂二次电池用负极的碳粉的制造方法,该锂二次电池负极具有优异的循环特性和高容量的快速充放电特性,为锂二次电池负极提供碳材料 其具有优异的循环特性和高容量的快速充放电特性,提供了在集电体和负极混合物之间的粘合性优异的锂二次电池用负极,循环特性和快速充电 /放电特性,并提供具有优异的循环特性和高容量的快速充放电特性的锂二次电池。 解决方案:制造碳粉末进行各向同性加压处理的锂二次电池负极用碳粉末,通过该方法得到的锂二次电池负极用碳粉末,碳粉末 通过包含碳粉的锂二次电池的方法或负极制备,并且提供具有该负极的锂二次电池和含有锂化合物的正极。 版权所有(C)2011,JPO&INPIT
    • 4. 发明专利
    • Negative electrode material for lithium secondary battery, lithium secondary battery, and automobile
    • 用于锂二次电池,锂二次电池和汽车的负极电极材料
    • JP2011159634A
    • 2011-08-18
    • JP2011069346
    • 2011-03-28
    • Hitachi Chem Co Ltd日立化成工業株式会社
    • ISHII YOSHITOOKABE KEIJINISHIDA TATSUYA
    • H01M4/587H01M4/133H01M4/1393H01M10/052H01M10/0566
    • Y02E60/122Y02T10/7011
    • PROBLEM TO BE SOLVED: To provide a lithium secondary battery having balanced input/output performance, high input/output performance, higher energy density and an excellent life property, to provide a negative electrode material therefor, and to provide an automobile. SOLUTION: The negative electrode material for the lithium secondary battery having an electrode group including a positive electrode 11, a negative electrode 12 and a separator 13, and electrolyte, and having an input density and an output density of 2,000 W/kg or higher and a capacity density of 15 Ah/kg or higher, is made of a carbon material satisfying that: (1) an average particle size is 5-25 μm; (2) an intensity ratio R (ID/IG) of a peak intensity (ID) of 1,300-1,400 cm -1 in Raman spectrum to a peak intensity (IG) of 1,560-1,650 cm -1 in Raman spectrum is 0.7-1.3; (3) an interlayer distance d (002) of the crystal measured by a wide-angle X-ray diffraction analysis is 3.41-3.70 Å; (4) a crystallite size Lc (002) in the direction of a c axis is 10-100 Å; (5) a true specific gravity is 1.95-2.19; (6) a bulk density is 0.2 g/cm 3 or higher; and (7) a specific surface area is 1.0-12 m 2 /g. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供具有平衡的输入/输出性能,高输入/输出性能,更高的能量密度和优异的寿命特性的锂二次电池,以提供一种负极材料,并提供一种汽车。 解决方案:具有包括正极11,负极12和隔膜13的电极组的锂二次电池用负极材料和电解质,输入密度和输出密度为2000W / kg 以上,容量密度为15Ah / kg以上的碳材料满足:(1)平均粒径为5〜25μm; (2)拉曼光谱中的峰强度(ID)为1,300-1,400cm -1 / SP>与峰值强度(IG)为1560-1,650cm -1 拉曼光谱为0.7-1.3; (3)通过广角X射线衍射分析测得的晶体的层间距离d(002)为3.41-3.70; (4)c轴方向的微晶尺寸Lc(002)为10〜 (5)真比重为1.95-2.19; (6)体积密度为0.2g / cm 3以上; 和(7)比表面积为1.0-12m 2 / SP / g。 版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • Negative electrode for lithium secondary battery
    • 用于锂二次电池的负极
    • JP2008159595A
    • 2008-07-10
    • JP2008036138
    • 2008-02-18
    • Hitachi Chem Co Ltd日立化成工業株式会社
    • ISHII YOSHITONISHIDA TATSUYAFUJITA ATSUSHIYAMADA KAZUO
    • H01M4/133H01M4/1393H01M4/587H01M10/0525H01M10/0566
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a negative electrode for a lithium secondary battery which is superior in rapid charging and discharging characteristics and cycle characteristics, or has a small irreversible capacity at a first cycle and superior cycle characteristics, or has a small irreversible capacity at the first cycle and superior rapid charging and discharging characteristics and cycle characteristics, and to provide a lithium secondary battery. SOLUTION: The negative electrode for a lithium secondary battery is constituted in such a manner that, a plurality of flat particles are arranged so that they are aggregated and coupled to one another so as to be not parallel in orientating surfaces, and graphite paste composed by mixing an organic coupling agent and a solvent is added to a graphite particle having fine pores when observing the cross section of the particle by a canning microscope photograph, thus integrating the particles. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供一种在快速充放电特性和循环特性方面优异的锂二次电池的负极,或者在第一循环具有小的不可逆容量和优异的循环特性,或者具有小的 第一循环的不可逆容量和优异的快速充放电特性和循环特性,并提供锂二次电池。 解决方案:用于锂二次电池的负极以这样的方式构成,使得多个平坦颗粒被布置成使得它们彼此聚集并彼此结合,使得在取向表面上不平行,并且石墨 将通过混合有机偶联剂和溶剂组成的糊料加入到具有细孔的石墨颗粒中,通过罐头显微镜照片观察颗粒的横截面,从而整合颗粒。 版权所有(C)2008,JPO&INPIT
    • 8. 发明专利
    • Carbon particle for lithium-ion secondary battery anode, anode for lithium-ion secondary battery, and lithium-ion secondary battery
    • 用于锂离子二次电池阳极的碳颗粒,锂离子二次电池的阳极和锂离子二次电池
    • JP2009238584A
    • 2009-10-15
    • JP2008083220
    • 2008-03-27
    • Hitachi Chem Co Ltd日立化成工業株式会社
    • TAKAHASHI TEPPEIISHII YOSHITO
    • H01M4/587C01B31/04
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To provide carbon particles for a lithium-ion secondary battery anode of high capacity and excellent cycle characteristics, an anode for a lithium-ion secondary battery using the same, and a lithium-ion secondary battery.
      SOLUTION: The carbon particle used for the lithium-ion secondary battery anode is to have a roundness of a particle cross section of 0.6 to 0.9, an interlayer distance d (002) of graphite crystal found by X-ray diffraction measurement of 3.38 Å or less, and a crystallite size Lc (002) in a C-axis direction of 500 Å or more. As to a sample anode using the carbon particles, a peak intensity ratio Ih002/Ih110 of a carbon 002 face (a face horizontal to a graphite layer) to a carbon 110 face (a face vertical to a graphite layer) measured by the X-ray diffraction is to be 600 or less.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供高容量和优异的循环特性的锂离子二次电池负极的碳颗粒,使用该阳极的锂离子二次电池和锂离子二次电池。 解决方案:用于锂离子二次电池阳极的碳粒子具有0.6至0.9的颗粒横截面的圆度,通过X射线衍射测量发现的石墨晶体的层间距离d(002) 3.38以下,C轴方向的微晶尺寸Lc(002)为500以上。 对于使用碳粒子的样品阳极,通过X射线测定的碳002面(水平面与石墨层的面)与碳110面(与石墨层垂直的面)的峰强度比Ih002 / Ih110, X射线衍射为600以下。 版权所有(C)2010,JPO&INPIT