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    • 2. 发明申请
    • NEGATIVE ELECTRODE FOR NON-AQUEOUS-SYSTEM SECONDARY BATTERY AND MANUFACTURING PROCESS FOR THE SAME
    • 用于非水系统二次电池的负极和其制造方法
    • US20120202117A1
    • 2012-08-09
    • US13501977
    • 2010-10-06
    • Takayuki HiroseManabu MiyoshiHitotoshi MuraseHideki GodaKazuhiro Izumoto
    • Takayuki HiroseManabu MiyoshiHitotoshi MuraseHideki GodaKazuhiro Izumoto
    • H01M4/64B05D5/12
    • H01M4/621H01M4/134H01M4/386H01M4/622
    • It is equipped with a negative-electrode current collector, and a negative-electrode mixture-material layer comprising a negative-electrode mixture material that includes a negative-electrode active material containing silicon (Si) and a binding agent at least, the negative-electrode mixture-material layer being formed on a surface of the negative-electrode current collector; and the binding agent includes a polyimide-silica hybrid resin being made by subjecting a silane-modified polyamic acid to sol-gel curing and dehydration ring-closing, the silane-modified polyamic acid being expressed by the following formula (wherein: “R1” specifies an aromatic tetracarboxylic dianhydride residue including 3,3′,4,4′-biphenyltetracarboxylic dianhydride residue in an amount of 90% by mole or more; “R2” specifies an aromatic diamine residue including a 4,4′-diaminodiphenyl ether residue in an amount of 90% by mole or more; “R3” specifies an alkyl group whose number of carbon atoms is from 1 to 8; “R4” specifies an alkyl group or an alkoxy group whose number of carbon atoms is from 1 to 8 independently of one another; “q” is from 1 to 5,000; “r” is from 1 to 1,000; and “m” is from 1 to 100).
    • 具备负极集电体和负极混合材料层,负极混合材料层至少含有含有硅(Si)和结合剂的负极活性物质的负极混合材料, 电极复合材料层形成在负极集电体的表面上; 粘合剂包括通过使硅烷改性聚酰胺酸进行溶胶 - 凝胶固化和脱水闭环而制成的聚酰亚胺 - 二氧化硅杂化树脂,所述硅烷改性聚酰胺酸由下式表示(其中:“R1” 指定含有90摩尔%以上的3,3',4,4'-联苯四羧酸二酐残基的芳香族四羧酸二酐残基;“R2”表示包含4,4'-二氨基二苯醚残基的芳香族二胺残基 90摩尔%以上,“R3”表示碳原子数1〜8的烷基,“R4”表示碳原子数为1〜8的烷基或烷氧基, “q”为1〜5,000;“r”为1〜1000,“m”为1〜100)。