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    • 26. 发明申请
    • POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY
    • 用于二次电池的正极电极活性材料
    • US20130224608A1
    • 2013-08-29
    • US13883662
    • 2011-11-16
    • Hideaki SasakiTakehiro Noguchi
    • Hideaki SasakiTakehiro Noguchi
    • H01M4/505H01M4/52
    • H01M4/505C01G53/54C01P2004/51C01P2004/61C01P2006/12H01M4/13H01M4/131H01M4/366H01M4/52H01M4/525H01M10/052H01M2004/028Y02T10/7011
    • A positive electrode active material having a charge and discharge range of 4.5 V or more with respect to lithium metal and used for a secondary battery excellent in charge and discharge characteristics and cycle characteristics is provided. The positive electrode active material B for a secondary battery according to the exemplary embodiment is obtained by subjecting a positive electrode active material A for a secondary battery having a charge and discharge range of 4.5 V or more with respect to lithium metal to coupling treatment with a coupling agent containing at least fluorine. Further, the positive electrode active material B for a secondary battery according to the exemplary embodiment has a film at least containing fluorine on at least a part of a surface of a positive electrode active material A for a secondary battery having a charge and discharge range of 4.5 V or more with respect to lithium metal. The exemplary embodiment can provide a positive electrode active material having a charge and discharge range of 4.5 V or more with respect to lithium metal and used for a secondary battery excellent in charge and discharge characteristics and cycle characteristics.
    • 提供了相对于锂金属具有4.5V以上的充放电范围的正极活性物质,用于充放电特性和循环特性优异的二次电池。 根据示例性实施方式的二次电池用正极活性物质B是通过使正极活性物质A相对于锂金属进行4.5V以上的充放电范围的二次电池的接合处理而得到的 至少含有氟的偶联剂。 此外,根据示例性实施方式的二次电池用正极活性物质B,在具有充放电范围的二次电池用正极活性物质A的至少一部分表面上至少含有氟的膜 相对于锂金属为4.5V以上。 该示例性实施例可以提供相对于锂金属具有4.5V或更大的充电和放电范围的正电极活性材料,并且用于充放电特性和循环特性优异的二次电池。