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    • 1. 发明专利
    • Electrode for secondary battery
    • 二次电池电极
    • JP2007128782A
    • 2007-05-24
    • JP2005321387
    • 2005-11-04
    • Sanyo Electric Co LtdSumitomo Electric Ind Ltd三洋電機株式会社住友電気工業株式会社
    • YOSHIDA KENTAROAWATA HIDEAKIOKUNO KAZUKIIHARA HIROHIKOYAGI HIROMASA
    • H01M4/02H01M4/13H01M4/139H01M10/05
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide an electrode for a secondary battery capable of suppressing reduction of a battery capacity caused by the fact that an active material layer falls off from a current collector or inside fractures occur because of swelling and contraction accompanied with charge and discharge, and provide the secondary battery provided with this electrode.
      SOLUTION: This is the electrode for the secondary battery in which the active material layer containing the active material to carry out storing and release of metal ions is equipped on the current collector, the active material layer contains oxygen, and in this active material layer, oxygen concentration of the boundary part to the current collector and oxygen concentration inside the active material layer satisfy (oxygen concentration at the boundary part of active material layer)/(oxygen concentration inside active material layer)
    • 要解决的问题:提供一种能够抑制活性物质层从集电体脱落的事实引起的电池容量的降低的二次电池用电极,或者由于伴随着发生膨胀和收缩而发生内部断裂 充电和放电,并提供设置有该电极的二次电池。 解决方案:这是用于二次电池的电极,其中含有活性材料的活性材料层用于进行金属离子的储存和释放的装置设置在集电器上,活性材料层含有氧,并且在该活性物质中 材料层,与集电体的边界部分的氧浓度和活性物质层内的氧浓度满足(活性物质层的边界部位的氧浓度)/(活性物质层内的氧浓度)<3。 通过降低边界部分的氧浓度,金属离子和氧气反应形成氧化物,并且通过该氧化物可以抑制与集电体的粘合强度降低或活性物质层内部被氧化物断裂 作为起点。 活性物质层可以通过气相法形成。 版权所有(C)2007,JPO&INPIT
    • 2. 发明专利
    • Lithium secondary battery
    • 锂二次电池
    • JP2007042329A
    • 2007-02-15
    • JP2005223034
    • 2005-08-01
    • Mitsui Chemicals IncSanyo Electric Co Ltd三井化学株式会社三洋電機株式会社
    • HIBARA AKIONOGI YOSHINOBUYAGI HIROMASA
    • H01M4/02H01M4/38H01M10/05H01M10/052H01M10/0525H01M10/0567H01M10/0569
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a lithium secondary battery aiming at further high energy density by drastically alleviating lowering of discharging capacity accompanying a charging/discharging cycle.
      SOLUTION: By paying attention to two characteristics of the lithium secondary battery, especially, a coefficient of cubic expansion of an anode activator at a charged state to that at a discharging state, and a composition of nonaqueous electrolyte, an anode activator containing an element of 12th to 15th group of the periodic table is used, a ratio of quantity of the anode activator to the cathode activator, discharging capacity, or the like are appropriately selected so that a coefficient of cubic expansion becomes 50% or higher, and a nonaqueous electrolyte containing fluorinated ethylene carbonate, carbonate composed of only hydrogen, oxygen and carbon, and lithium salt, of which a content of the fluorinated ethylene carbonate to the total quantity of the electrolyte is not less than 2 wt.%.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:通过显着地减轻伴随充放电循环的放电容量的降低来提供旨在进一步提高能量密度的锂二次电池。 解决方案:通过注意锂二次电池的两个特性,特别是在充电状态下的阳极活化剂与放电状态下的立方膨胀系数,以及非水电解质的组成,含有 使用周期表第12〜15族的元素,适当选择阳极活化剂与阴极活化剂的配合比例,放电容量等,使立方体膨胀系数成为50%以上, 包含氟化碳酸亚乙酯的非水电解质,仅由氢,氧和碳组成的碳酸酯和锂盐,其中氟化碳酸亚乙酯的含量相对于电解质总量不小于2重量%。 版权所有(C)2007,JPO&INPIT
    • 3. 发明专利
    • Negative electrode for lithium secondary battery, and lithium secondary battery
    • 锂二次电池负极和锂二次电池
    • JP2006269242A
    • 2006-10-05
    • JP2005085372
    • 2005-03-24
    • Sanyo Electric Co Ltd三洋電機株式会社
    • MINAMI HIROYUKIFUKUI ATSUSHIYAGI HIROMASAJINNO MARUO
    • H01M4/02H01M4/04H01M4/134H01M4/1395H01M4/38H01M4/62H01M4/64H01M4/66H01M10/05
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a negative electrode for lithium secondary battery in which a negative electrode mixture layer including a negative electrode active material containing silicon and/or silicon alloy and a binder is made to be sufficiently adhered to a negative electrode current collector and cycle life of the lithium secondary battery is improved. SOLUTION: As for a negative electrode 11 for lithium secondary battery, a conductive intermediate layer 11b which does not react with Li is deposited and formed on a negative electrode current collector 11a consisting of a metal foil by supplying a material from a gas phase, and a negative electrode mixture layer 11c including a negative electrode active material containing silicon and/or silicon alloy and a binder is formed on this conductive intermediate layer, and with this state, these are sintered in a non-oxidizing atmosphere. COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:为了提供一种锂二次电池的负极,其中包括含有硅和/或硅合金的负极活性物质和粘合剂的负极混合物层被充分粘附到负极 提高了锂二次电池的集电极和循环寿命。 解决方案:对于锂二次电池用负极11,通过从气体供给材料,在由金属箔构成的负极集电体11a上沉积不与Li反应的导电性中间层11b 在该导电性中间层上形成含有硅和/或硅合金的负极活性物质和粘合剂的负极合剂层11c,在这种状态下,在非氧化性气氛中烧结。 版权所有(C)2007,JPO&INPIT
    • 10. 发明专利
    • Lithium secondary battery
    • 锂二次电池
    • JP2006066165A
    • 2006-03-09
    • JP2004246101
    • 2004-08-26
    • Sanyo Electric Co Ltd三洋電機株式会社
    • YAGI HIROMASAMINAMI HIROYUKISAYAMA KATSUNOBU
    • H01M4/02H01M4/134H01M4/1395H01M4/38H01M4/66H01M10/05H01M10/052H01M10/0567
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To obtain a lithium secondary battery with large charging/discharging capacity and excellent cycle property, composed of an anode formed by depositing a non-crystalline thin film made of a silicon non-crystalline thin film or silicon as a main component on a current collector and using the non-crystalline thin film as an activator; a cathode; and a nonaqueous electrolyte. SOLUTION: The lithium secondary cell, composed of an anode formed by depositing a non-crystalline thin film made of a silicon non-crystalline thin film or silicon as a main component on a current collector and using the non-crystalline thin film as an activator; of a cathode; and of a nonaqueous electrolyte, is characterized by containing lithium carbonate in the nonaqueous electrolyte. COPYRIGHT: (C)2006,JPO&NCIPI
    • 解决的问题为了获得具有大的充电/放电容量和优异的循环性能的锂二次电池,由通过沉积由非晶硅薄膜或硅制成的非晶体薄膜形成的阳极组成, 集电器上的主要成分,使用非晶质薄膜作为活化剂; 阴极 和非水电解质。 解决方案:锂二次电池由通过在集电器上沉积由非晶硅非晶薄膜或硅作为主要成分制成的非晶薄膜而形成的阳极组成,并使用非晶体薄膜 作为激活剂; 的阴极; 和非水电解质的特征在于在非水电解质中含有碳酸锂。 版权所有(C)2006,JPO&NCIPI