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    • 2. 发明专利
    • Electrode for lithium ion battery, its manufacturing method, and lithium ion battery
    • 锂离子电池用电极,其制造方法和锂离子电池
    • JP2005050681A
    • 2005-02-24
    • JP2003281515
    • 2003-07-29
    • Hitachi Maxell Ltd日立マクセル株式会社
    • AOYAMA SHIGEOUEDA TOKUJISUGIYAMA HIROSHIKAWAI TETSUO
    • H01M4/70H01M4/134H01M4/1395H01M10/05H01M4/02H01M10/40
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide an electrode for a lithium ion battery suppressing the volume expansion in the longitudinal direction of an active material during charge, preventing collapse of the active material or peeling off of it from a current collector, preventing a swelling deformation of the whole electrode caused by volume change of the active material, increasing energy density, and enhancing cycle characteristics, and to provide a lithium ion battery using the electrode as a negative electrode.
      SOLUTION: The active material 2 is placed on the surface of a sheet-like current collector 1. The active material 2 is formed by disspersing a metal capable of alloying with Li or a lithium alloy in a dot shape. Regulating projections 4 ensuring the expansion spaces in the longitudinal direction of the active material 2 are installed on the sheet surface of the current collector 1. The regulating projections 4 are formed by interspersing a material not alloying with Li in a dot shape.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供一种锂离子电池用电极,其在充电时抑制活性物质的长度方向的体积膨胀,防止活性物质的塌陷或者使其从集电体剥离, 由于活性物质的体积变化引起的整个电极的膨胀变形,增加了能量密度,提高了循环特性,并提供了使用该电极作为负极的锂离子电池。 解决方案:将活性物质2放置在片状集电器1的表面上。活性物质2是通过使与Li或锂合金的点状合金化的金属分散而形成的。 将确保活性物质2的长度方向的膨胀空间的调节突起4安装在集电体1的片材表面上。调节突起4通过将不与Li合金化的材料分散成点状而形成。 版权所有(C)2005,JPO&NCIPI
    • 5. 发明专利
    • Nonaqueous electrolyte secondary battery
    • 非电解电解质二次电池
    • JP2008270086A
    • 2008-11-06
    • JP2007114521
    • 2007-04-24
    • Hitachi Maxell Ltd日立マクセル株式会社
    • UEDA TOKUJIEDAMOTO TOSHIYUKICHIYOU KANEYASU
    • H01M4/131H01M4/133H01M4/36H01M4/505H01M4/525H01M4/587H01M10/0525H01M10/0567
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery excelling in a cycle characteristic and a storage characteristic while achieving increase of capacity by high-voltage charging.
      SOLUTION: A positive electrode of this nonaqueous electrolyte secondary battery contains a first positive electrode active material Li
      (1+a) Mn
      x Ni
      y Co
      (1-x-y-z) M
      z O
      2 or/and a second positive electrode active material Li
      (1-s-b) Mg
      s Co
      (1-t-u) Al
      t M'
      u O
      2 ; a compound having a bond represented by -SO
      n - (1≤n≤4) is present on a surface of the positive electrode; the content of sulfur present on the surface of the positive electrode as the bond represented by the -SO
      n - (1≤n≤4) is 0.2-1.5 atomic% when analyzed by an X-ray photoelectron spectroscopic method.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种具有循环特性和存储特性的非水电解质二次电池,同时通过高压充电实现容量的增加。 解决方案:该非水电解质二次电池的正极包含第一正极活性物质Li(SB)(1 + a) SB> Co (1-xyz)/ / SB> 2 或/和第二正极活性物质Li(SB) )取值(1-TU) M'û 0 2 ; 在正极的表面上存在具有由-SO 3表示的键的化合物(1≤n≤4)。 当通过X射线光电子分析时,作为由-SO n - (1≤n≤4)表示的键,存在于正极表面的硫的含量为0.2-1.5原子% 光谱法。 版权所有(C)2009,JPO&INPIT
    • 6. 发明专利
    • Positive electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery
    • 非电解电解质二次电池和非电解电解质二次电池的正极
    • JP2007005148A
    • 2007-01-11
    • JP2005184294
    • 2005-06-24
    • Hitachi Maxell Ltd日立マクセル株式会社
    • HASHIMOTO HIROSHIUEDA TOKUJI
    • H01M4/02H01M4/131H01M4/505H01M4/525H01M4/62H01M10/05
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a positive electrode for a nonaqueous electrolyte secondary battery having high capacity and high safety in high temperature storage, and to provide the nonaqueous electrolyte secondary battery having the positive electrode.
      SOLUTION: The positive electrode for the nonaqueous electrolyte secondary battery has a positive mix layer made of a positive mix containing a positive active material, a conductive auxiliary, and a binder, the positive mix contains a lithium transition metal composite oxide represented by general formula Li
      (1+δ) Mn
      x Ni
      y Co
      (1-x-y) O
      2 (0≤δ≤0.05; 0.1 2 /g is contained as the conductive auxiliary, and the neutralization amount (A) obtained by neutralization titration of supernatant liquid obtained by immersing 2.5 g of the positive mix in 50 g of neutral water with a sulfuric acid solution having a concentration of 0.01 mol/l is 4.5 ml or less. The nonaqueous electrolyte secondary battery includes the positive electrode.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:提供一种高容量,高安全性的非水电解质二次电池用正极,并且提供具有正极的非水电解质二次电池。 解决方案:非水电解质二次电池用正极具有由正极活性物质,导电性助剂和粘合剂构成的正极混合物构成的正极混合层,正极混合物含有以下的锂过渡金属复合氧化物 通式Li< SB>(1 +δ)< SB> x< SB>< SB>(1-xy) 2 (0≤δ≤0.05; 0.1 / g,中和量(A)通过中和滴定上清液而得到的中和量(A),所述中和量通过将浓度为2.5g的正极混合物在50g中性水中浸渍, 0.01mol / l为4.5ml以下。 非水电解质二次电池包括正极。 版权所有(C)2007,JPO&INPIT
    • 8. 发明专利
    • Electrode material for nonaqueous secondary battery, its manufacturing method, and nonaqueous secondary battery using it
    • 非电源二次电池用电极材料及其制造方法及使用其的非标次级电池
    • JP2005135872A
    • 2005-05-26
    • JP2003373582
    • 2003-10-31
    • Hitachi Maxell Ltd日立マクセル株式会社
    • YAMADA MASAYUKISHIRASAWA KOUEDA TOKUJIAOYAMA SHIGEO
    • H01M10/05H01M4/02H01M4/36H01M4/48H01M4/485H01M4/62H01M4/58H01M10/40
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide an electrode material capable of realizing a nonaqueous secondary battery having high cycle characteristics, high heavy-load characteristics, and high capacity.
      SOLUTION: The electrode material of the nonaqueous secondary battery has oxide particles of at least one element selected from the group comprising Ti, Zr, V, Nb, Cr, Mo, and W and a covering layer for covering the particles and containing a carbon material having conductivity, and the covering layer is contained in a ratio to the total weight of 5 wt% or less. When the intensity of a peak present in the frequency region of 1550 cm
      -1 to 1650 cm
      -1 on a Raman spectrum measured by using argon laser having a wavelength of 514.5 nm is represented by I
      1 and when the intensity of a peak present in the frequency region of 1300 cm
      -1 to 1400 cm
      -1 on the Raman spectrum is represented by I
      2 , ratio (L
      2 /L
      1 ) is 0.4-1.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供能够实现具有高循环特性,高重负荷特性和高容量的非水二次电池的电极材料。 解决方案:非水二次电池的电极材料具有选自Ti,Zr,V,Nb,Cr,Mo和W中的至少一种元素的氧化物颗粒和用于覆盖颗粒并包含 具有导电性的碳材料,并且包覆层的总重量为5重量%以下。 当通过使用波长为514.5nm的氩激光器测量的拉曼光谱在1550cm -1 / 16min的频率区域中的峰值强度达到1650cm -1时, 由I 1 表示,并且当存在于1300cm×SP -1的频率区域中的峰值强度至1400cm -1时, 拉曼光谱由I 2 表示,比率(L 2 / L 1 )为0.4-1。 版权所有(C)2005,JPO&NCIPI
    • 9. 发明专利
    • Thin film electrode, manufacturing method of the same, and lithium secondary battery using that thin film electrode
    • 薄膜电极,其制造方法和使用薄膜电极的锂二次电池
    • JP2005108523A
    • 2005-04-21
    • JP2003337895
    • 2003-09-29
    • Hitachi Maxell Ltd日立マクセル株式会社
    • SUGIYAMA HIROSHIUEDA TOKUJIAOYAMA SHIGEO
    • H01M4/66H01M4/134H01M4/1395H01M4/38H01M10/05H01M4/02H01M4/04H01M10/40
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide a thin film electrode having high elasticity, hardly generating swelling of an electrode, wrinkling of a current collector and a crack in an activator thin film, and manufacturing method of the same, and to provide a lithium secondary battery using the thin film electrode with high capacity, cycle property and rate property.
      SOLUTION: The thin film electrode 1 comprises a current collector 2 made of metal not alloying with lithium, and a thin film 3 formed on the current collector 2, containing an element alloying with lithium, having porosity of not less than 1% and not more than 40%. The manufacturing method of the thin film electrode comprises a process of forming the thin film 3 containing an element alloying with lithium and a blowing agent on the surface of the current collector 2 made of metal not alloying with lithium, by an electroplating method, and a process of forming the thin film 3 so as to have a porosity of not less than 1% and not more than 40% by removing the blowing agent in the thin film 3.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供一种具有高弹性,几乎不产生电极膨胀,集电器起皱和活化剂薄膜中的裂纹的薄膜电极及其制造方法,并且提供一种 锂二次电池使用具有高容量,循环性能和速率特性的薄膜电极。 解决方案:薄膜电极1包括由与锂合金化的金属制成的集电体2和形成在集电体2上的含有与锂合金的元素,具有不小于1%的孔隙率的薄膜3, 不超过40%。 薄膜电极的制造方法包括以下步骤:通过电镀法形成含有与锂合金化的元素的薄膜3和由与金属非合金化的金属制成的集电体2的表面上的发泡剂,以及 通过除去薄膜3中的发泡剂,形成薄膜3以具有不小于1%且不大于40%的孔隙率的工艺。(C)2005,JPO&NCIPI