发明名称 |
CURRENT COLLECTOR, ELECTRODE, SECONDARY CELL, AND CAPACITOR |
摘要 |
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. |
申请公布号 |
US2015221452(A1) |
申请公布日期 |
2015.08.06 |
申请号 |
US201314414399 |
申请日期 |
2013.07.11 |
申请人 |
Furukawa Electric Co., Ltd. ;UACJ Foil Corporation ;UACJ Corporation |
发明人 |
Iida Takahiro;Morishima Yasumasa;Ito Takayori;Hara Hidekazu;Kataoka Tsugio;Inoue Mitsuya;Yamabe Satoshi;Kato Osamu;Honkawa Yukiou;Saito Sohei;Yaegashi Tatsuhiro |
分类号 |
H01G11/66;H01M4/66;H01G11/04 |
主分类号 |
H01G11/66 |
代理机构 |
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代理人 |
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主权项 |
1. A current collector comprising:
metal foil; and a conductive layer with a film thickness of 0.1 μm to 10 μm formed on a surface of the metal foil,
wherein the conductive layer includes a conductive material and a binder material,a melting point of the binder material is 80° C. to 150° C., andthe binder material shows, in differential scanning calorimetry (DSC) in a range from room temperature to 200° C., one or more endothermic peaks in a heating-up process and one or more exothermic peaks in a cooling-down process,wherein in a case where two or more endothermic peaks are shown, each difference between the peaks is 15° C. or more, andin a case where only one exothermic peak is shown, the exothermic peak falls within a range of 50 to 120° C., and a width at half maximum of the exothermic peak is 10° C. or less, in a case where two or more exothermic peaks are shown, a largest exothermic peak among the exothermic peaks falls within the range of 50 to 120° C., and a width at half maximum of the exothermic peak is 10° C. or less. |
地址 |
Chiyoda-ku, Tokyo JP |