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    • 31. 发明专利
    • Negative active material for nonaqueous secondary battery and method of manufacturing the same
    • 非正式二次电池负极活性材料及其制造方法
    • JP2012033311A
    • 2012-02-16
    • JP2010170167
    • 2010-07-29
    • Toyota Industries Corp株式会社豊田自動織機
    • MIYOSHI MANABUMURASE KIMITOSHI
    • H01M4/48H01M4/36H01M4/38
    • H01M4/38H01M4/134H01M4/364H01M4/483
    • PROBLEM TO BE SOLVED: To provide a new negative active material for a nonaqueous secondary battery satisfying both initial charge/discharge efficiency and cycle characteristics of the nonaqueous secondary battery even in the negative active material including a silicon oxide, and to provide a method of manufacturing the negative active material for the nonaqueous secondary battery.SOLUTION: In the negative active material for the nonaqueous secondary battery which includes a composite powder composed by milling a silicon oxide based powder containing a silicon oxide and an iron based powder containing an iron, the composite powder is characterized in that it includes the silicon oxide derived from the silicon oxide based powder and the iron derived from the iron based powder and/or the iron compound containing the iron derived from the iron based powder.
    • 要解决的问题:即使在包含氧化硅的负极活性材料中,即使在满足非水二次电池的初始充放电效率和循环特性的非水二次电池中,也提供新的负极活性物质, 制造非水系二次电池用负极活性物质的方法。 解决方案:在包含通过研磨含有氧化硅的氧化硅基粉末和含铁的铁基粉末组成的复合粉末的非水系二次电池用负极活性物质中,其特征在于,其包含 衍生自氧化硅基粉末的氧化硅和衍生自铁基粉末的铁和/或含有由铁基粉末衍生的铁的铁化合物。 版权所有(C)2012,JPO&INPIT
    • 34. 发明专利
    • Electrode for nonaqueous secondary battery and method for manufacturing the same
    • 非电解二次电池用电极及其制造方法
    • JP2010232077A
    • 2010-10-14
    • JP2009079846
    • 2009-03-27
    • Toyota Industries Corp株式会社豊田自動織機
    • MAEHARA YUKIISHIKAWA HIDEAKIMIYOSHI MANABUMURASE KIMITOSHI
    • H01M4/62H01M4/134H01M4/1395H01M4/38
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide an electrode for a nonaqueous secondary battery, capable of suppressing deterioration of battery performance accompanied with pulverization of active material caused by repetition of charge and discharge, and to provide a method for manufacturing the same. SOLUTION: The electrode is obtained by a preparing process of an electrode mixture for obtaining an electrode mixture by mixing an active material containing Si contained powder, composed of silicon and/or silicon compound, an electric conduction assistant composed of carbon powder containing aggregated particles with a knitting ball shape formed, by entangling carbon fibers which have an average fiber diameter of 5 nm or more to 100 nm or less and an average fiber length of 1 μm or more to 6 μm or less, and a binder, and by a coating process for coating a collector with the electrode mixture. In the electrode, there exist the active material, the electrically conducting assistants, and the binder binding the active material and the electrically conducting assistants, and the carbon fibers partially exist in an aggregated state. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种非水二次电池用电极,其能够抑制由于重复进行充放电而引起的活性物质粉碎的电池性能的劣化,并提供其制造方法。 解决方案:通过电极混合物的制备方法获得电极,该电极混合物通过混合包含由硅和/或硅化合物组成的含Si粉末的活性材料,由含有 通过缠结平均纤维直径为5nm以上至100nm以下且平均纤维长度为1μm以上至6μm以下的碳纤维和粘合剂,形成有针织球形状的聚集颗粒,以及 通过用电极混合物涂覆收集器的涂布方法。 在电极中,存在活性物质,导电助剂和粘合活性物质和导电助剂的粘合剂,碳纤维部分以聚集状态存在。 版权所有(C)2011,JPO&INPIT