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    • 3. 发明专利
    • Lithium ion secondary cell
    • 锂离子二次电池
    • JP2005243323A
    • 2005-09-08
    • JP2004048962
    • 2004-02-25
    • Nec Corp日本電気株式会社
    • NUMATA TATSUJIMIURA TAMAKI
    • H01M4/131H01M4/1391H01M4/505H01M4/587H01M4/62H01M10/05H01M10/0525H01M10/44H01M10/40H01M4/58
    • Y02T10/7011
    • PROBLEM TO BE SOLVED: To provide a lithium ion secondary cell capable of obtaining a high high-rate property without reducing an operating voltage.
      SOLUTION: The lithium ion secondary cell equipped with a positive electrode and a negative electrode facing each other through an electrolyte layer and proceeding a charge and discharge reaction by the reversible displacement of a lithium ion between the positive electrode and the negative electrode is manufactured using a manganic acid lithium system composite oxide having a spinel structure as an active material of the positive electrode, and at least immediately after assembling as a cell, at least one of either sodium nitrate or potassium nitrate is included in an active material layer structuring the positive electrode in addition to the previous active material. Furthermore, provided the sum of each nitrate conversion mass of sodium atoms and potassium atoms contained in the active material layer of the positive electrode, in an active material layer of a negative electrode, in a surface coating film formed at the negative electrode and in an electrolyte layer after the initial charge and discharge is proceeded, is represented as A, and that, a mass is B when the manganic acid lithium system composite oxide is a stoichiometric composition, a value of a ratio A/(A+B) is structured to be within a range from 0.0030 to 0.10.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 解决的问题:提供一种能够在不降低工作电压的情况下获得高的高速性能的锂离子二次电池。 解决方案:通过电解质层彼此面对的正极和负极的锂离子二次电池通过在正极和负极之间的锂离子的可逆位移进行充放电反应, 使用具有尖晶石结构的锰酸锂系复合氧化物作为正极活性物质制造,至少在组装为电池后立即将硝酸钠或硝酸钾中的至少一种纳入活性物质层结构 正电极除了以前的活性物质。 此外,提供在正极活性物质层中含有的硝酸盐转化质量和负极活性物质层中的硝酸盐转化质量的总和,在负极形成的表面被覆膜中, 初始充放电后的电解质层表示为A,当锰酸锂系复合氧化物为化学计量组成时,质量为B,A /(A + B)的比例为 在0.0030〜0.10的范围内。 版权所有(C)2005,JPO&NCIPI
    • 6. 发明专利
    • Positive electrode for lithium-ion secondary battery, and lithium-ion secondary battery
    • 用于锂离子二次电池的正极和锂离子二次电池
    • JP2005085720A
    • 2005-03-31
    • JP2003319552
    • 2003-09-11
    • Nec Corp日本電気株式会社
    • NOGUCHI TAKEHIROYAMAZAKI IKIKONUMATA TATSUJI
    • C01G53/00H01M4/02H01M4/36H01M4/485H01M4/505H01M4/525H01M10/05H01M4/58H01M10/40
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a lithium-ion secondary battery usable at a charge and discharge rate of a high energy density and a wide range, and a positive electrode suitable for that purpose.
      SOLUTION: This is the positive electrode for the lithium-ion secondary battery containing a compound oxide of a spinel structure which is shown by Li [M
      1
      m M
      2
      2-m ] O4 (M
      1 is at least one kind selected from a group composed of Ni, Cr, Fe, Co, and Cu, and 0.4 2 is at least one kind selected from a group composed of Mn, Ti, and Si), and which releases and stores Li at an electric potential of 4.5 V or more for Li, and the compound oxide of a layered structure which is shown by Li[X
      x Z
      z Mn
      1-x-z ]O
      2 (X is at least one kind selected from a group composed of Ni, Cr, Fe, Co, and Cu, Z is at least one kind selected from a group composed of Li, Al, and Mg, 0.1≤x≤0.5, 0≤z
    • 要解决的问题:提供一种可用于高能量密度和宽范围的充放电速率的锂离子二次电池,以及适用于该目的的正极。 解决方案:这是包含尖晶石结构的复合氧化物的锂离子二次电池的正极,其由Li [M&lt; SP&gt;&lt; SB&gt; SP> 2 2-m ] O4(M 1 是选自由Ni,Cr,Fe,Co和Cu组成的组中的至少一种 ,0.4 2 是选自由Mn,Ti和Si组成的组中的至少一种),并且将Li放电并存储在4.5V的电位或 更优选为Li,并且由Li [X Z Mn 1-xz] O表示的层状结构的复合氧化物, SB> 2 (X是选自由Ni,Cr,Fe,Co和Cu组成的组中的至少一种,Z是选自由Li,Al和Mg组成的组中的至少一种, 0.1≤x≤0.5,0≤z<0.3,0.1≤x+z≤0.5)。 这是具有该正极的锂离子二次电池。 版权所有(C)2005,JPO&NCIPI
    • 7. 发明专利
    • Lithium secondary battery and manufacturing method thereof
    • 锂二次电池及其制造方法
    • JP2012221681A
    • 2012-11-12
    • JP2011085362
    • 2011-04-07
    • Nec Corp日本電気株式会社
    • KAJITA TETSUYAIRIYAMA JIRONUMATA TATSUJI
    • H01M4/136H01M4/36H01M4/38H01M4/48H01M4/52H01M4/58H01M10/052
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide a lithium secondary battery which, even when an olivine compound having large specific gravity but excelling in stability at charge/discharge time is used for a cathode active material and a material having large lithium ion irreversible capacity at initial charge/discharge time is used for an anode active material, can restrict reduction in energy density per unit cubic volume of the cathode active material at subsequent charges/discharges, has high capacity, and can restrict reduction in manufacturing efficiency due to a difference in cathode and anode layer thickness, and which is high in safety and good in charge/discharge efficiency and has long life, and a manufacturing method thereof.SOLUTION: A cathode 6 prior to an initial charge includes a cathode active material which contains a specific olivine compound and a specific lithium transition metal oxide. The cathode active material after the initial charge contains a lithium irreversible transition metal oxide which is formed from the lithium transition metal oxide as it emits all of the lithium which can be emitted.
    • 解决的问题:提供一种锂二次电池,其即使当具有比重大但在充电/放电时间稳定性优异的橄榄石化合物用于阴极活性材料和具有大锂离子不可逆容量的材料时也是如此 在初始充放电时间用于阳极活性物质时,可以限制随后的充放电时阴极活性物质的单位立方体积的能量密度的降低,具有高容量,并且可以限制由于差异导致的制造效率的降低 阴极和阳极层的厚度及其制造方法,其安全性高,充放电效率好,寿命长。 解决方案:初始电荷之前的阴极6包括含有特定橄榄石化合物和特定锂过渡金属氧化物的正极活性材料。 初始充电后的正极活性物质含有由锂过渡金属氧化物形成的锂不可逆过渡金属氧化物,因为锂离子过渡金属氧化物会释放出所有能发出的锂。 版权所有(C)2013,JPO&INPIT