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    • 7. 发明申请
    • CURRENT COLLECTOR, ELECTRODE, SECONDARY CELL, AND CAPACITOR
    • 电流收集器,电极,二次电池和电容器
    • US20150221452A1
    • 2015-08-06
    • US14414399
    • 2013-07-11
    • Furukawa Electric Co., Ltd.UACJ Foil CorporationUACJ Corporation
    • Takahiro IidaYasumasa MorishimaTakayori ItoHidekazu HaraTsugio KataokaMitsuya InoueSatoshi YamabeOsamu KatoYukiou HonkawaSohei SaitoTatsuhiro Yaegashi
    • H01G11/66H01M4/66H01G11/04
    • H01G11/66H01C7/027H01G11/04H01G11/28H01G11/50H01G11/68H01G11/70H01M4/622H01M4/625H01M4/661H01M4/667H01M10/052H01M10/4235Y02E60/13
    • Provided are a current collector which has an excellent high-rate property and exerts a sufficient safety function when employed in a secondary battery or a capacitor, as well as an electrode, a secondary battery or a capacitor in which said current collector is employed. According to the invention, a current collector is provided which comprises: metal foil; and a conductive layer with a film thickness of 0.1 μm to 10 μm formed on a surface of said metal foil. Here, said conductive layer includes a conductive material and a binder material. A melting point of said binder material is 80° C. to 150° C. Further, said binder material shows, in differential scanning calorimetry (DSC) in a range from room temperature to 200° C., one or more endothermic peaks in the heating-up process. In a case where said binder material shows two or more endothermic peaks, each difference between said peaks is 15° C. or more. Moreover, said binder material shows one or more exothermic peaks in the cooling-down process. In a case where said binder material shows only one exothermic peak, said exothermic peak falls within a range of 50 to 120° C., and a width at half maximum of said exothermic peak is 10° C. or less. On the other hand, in a case where said binder material shows two or more exothermic peaks, a maximum exothermic peak among said exothermic peaks falls within a range of 50 to 120° C., and a width at half maximum of said exothermic peak is 10° C. or less.
    • 提供一种集电器,其具有优异的高速性能并且在二次电池或电容器中使用时具有足够的安全功能,以及其中采用集电器的电极,二次电池或电容器。 根据本发明,提供一种集电器,其包括:金属箔; 以及形成在所述金属箔的表面上的膜厚度为0.1μm至10μm的导电层。 这里,所述导电层包括导电材料和粘合剂材料。 所述粘合剂材料的熔点为80℃至150℃。此外,所述粘合剂材料在差示扫描量热法(DSC)中在室温至200℃的范围内显示出一个或多个吸热峰 加热过程。 在所述粘合剂材料显示两个或更多个吸热峰的情况下,所述峰之间的每个差为15℃或更高。 此外,所述粘合剂材料在冷却过程中显示一个或多个放热峰。 在所述粘合剂材料仅显示一个放热峰的情况下,所述放热峰落在50〜120℃的范围内,所述放热峰的半值宽度为10℃以下。 另一方面,在所述粘合剂材料显示两个以上的放热峰的情况下,所述放热峰中的最大放热峰落在50〜120℃的范围内,所述放热峰的半峰宽度为 10℃以下。