发明名称 |
COPPER FOIL, NEGATIVE ELECTRODE CURRENT COLLECTOR AND NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERY |
摘要 |
An object of the present invention is to provide a copper foil inexpensive and sufficient in tensile strength even after heat treatment. The copper foil includes zinc in a content range of 0.02% by mass to 2.7% by mass in the total mass of the entire copper foil, and if the regions in thicknesses direction from both surfaces of the copper foil where occupies 5% by mass in the total mass of the entire copper foil are referred to as the respective external layers and a region between one external layer and the other external layer is referred to as an internal layer, the internal layer includes copper as a main element and includes 100 ppm or more of one or mixture of small amount-elements selected from carbon, sulfur, chlorine and nitrogen, and includes zinc at 10% or more in the total mass of zinc included in the entire copper foil. |
申请公布号 |
US2015132658(A1) |
申请公布日期 |
2015.05.14 |
申请号 |
US201314402501 |
申请日期 |
2013.05.21 |
申请人 |
MITSUI MINING & SMELTING CO., LTD. |
发明人 |
Miyake Koichi;Maeda Tomoyuki;Hozumi Kazutaka;Nakahara Hiroaki;Yamauchi Shinichi |
分类号 |
H01M4/66 |
主分类号 |
H01M4/66 |
代理机构 |
|
代理人 |
|
主权项 |
1. A copper foil including zinc in a content range of 0.02% by mass to 2.7% by mass in the total mass of the entire copper foil,
wherein the regions in thicknesses direction from both surfaces of the copper foil where occupies 5% by mass in the total mass of the entire copper foil are referred to as the respective external layers, and a region between one external layer and the other external layer is referred to as an internal layer, the internal layer comprises copper as a main element and includes 100 ppm or more of one or mixture of small amount-elements selected from carbon, sulfur, chlorine and nitrogen, and includes zinc at 10% or more in the total mass of zinc included in the entire copper foil. |
地址 |
Tokyo JP |