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    • 23. 发明申请
    • MIXED METAL OXIDE AND SODIUM SECONDARY BATTERY
    • 混合金属氧化物和钠二次电池
    • US20110003192A1
    • 2011-01-06
    • US12865993
    • 2009-02-03
    • Satoru KuzeMasami MakideraTaketsugu Yamamoto
    • Satoru KuzeMasami MakideraTaketsugu Yamamoto
    • H01M2/16H01M4/88
    • H01M10/054C01G49/0072C01G53/50C01P2002/72H01M2/1653H01M2/1686H01M4/505H01M4/525H01M4/5825H01M10/4235Y02E60/122
    • The present invention provides a sodium secondary battery capable of reducing the amount used of a scarce metal element such as lithium and cobalt and moreover, ensuring a larger discharge capacity after repeating charge/discharge as compared with conventional techniques, and a mixed metal oxide usable as the positive electrode active material therefor. The mixed metal oxide of the present invention comprises Na, Mn and M1 wherein M1 is Fe or Ni, with a Na:Mn:M1 molar ratio being a:(1-b):b wherein a is a value falling within the range of more than 0.5 and less than 1, and b is a value falling within the range of from 0.001 to 0.5. Another mixed metal oxide of the present invention is a mixed metal oxide represented by the following formula (1): NaaMn1-bM1bO2 (1) wherein M1, a and b each have the same meaning as above. The positive electrode active material for sodium secondary batteries of the present invention comprises the mixed metal oxide above.
    • 本发明提供一种钠二次电池,其能够减少诸如锂和钴之类的稀有金属元素的使用量,此外,与常规技术相比,确保了重复充电/放电后的放电容量更大,并且可用作 正极活性物质。 本发明的混合金属氧化物包括Na,Mn和M1,其中M1是Fe或Ni,Na:Mn:M1的摩尔比为a:(1-b):b其中a是落在 大于0.5且小于1,b为0.001至0.5的范围内的值。 本发明的另一种混合金属氧化物是由下式(1)表示的混合金属氧化物:NaaMn1-bM1bO2(1)其中M1,a和b各自具有与上述相同的含义。 本发明的钠二次电池用正极活性物质包含上述混合金属氧化物。
    • 30. 发明申请
    • SODIUM SECONDARY BATTERY
    • 钠二次电池
    • US20110003191A1
    • 2011-01-06
    • US12865987
    • 2009-02-03
    • Satoru KuzeMasami MakideraTaketsugu Yamamoto
    • Satoru KuzeMasami MakideraTaketsugu Yamamoto
    • H01M4/50H01M4/52H01M2/14
    • H01M2/1686C01G45/1228C01G51/50C01P2006/40H01M2/1653H01M4/505H01M4/525H01M4/587H01M10/054
    • The present invention provides a sodium secondary battery having a superior cycling performance as compared with conventional techniques. A sodium secondary battery of the present invention comprises a positive electrode comprising a mixed metal oxide which comprises Na and M1 wherein M1 represents two or more elements selected from the group consisting of Mn, Fe, Co and Ni, with an Na:M1 molar ratio being a:1 wherein a is a value falling within the range of more than 0.5 and less than 1, a negative electrode comprising a carbonaceous material capable of storing and releasing Na ions, and an electrolyte. Further, the sodium secondary battery of the present invention may comprise a separator, and the separator may be a separator comprising a porous laminated film in which a heat-resistant porous layer comprising a heat-resistant resin and a porous film comprising a thermoplastic resin are stacked each other.
    • 本发明提供了与常规技术相比具有优异的循环性能的钠二次电池。 本发明的钠二次电池包括含有包含Na和M1的混合金属氧化物的正极,其中M1表示选自Mn,Fe,Co和Ni中的两种或更多种元素,Na:M1摩尔比 其中a是大于0.5且小于1的范围的值,包含能够储存和释放Na离子的碳质材料的负极和电解质。 此外,本发明的钠二次电池可以包括隔膜,隔板可以是包括多孔层压膜的隔板,其中包含耐热树脂的耐热多孔层和包含热塑性树脂的多孔膜是 彼此堆叠