CURRENT COLLECTOR, ANODE, AND BATTERY

摘要

A current collector containing copper, anode, and battery are provided to improve the adhesion between an active material layer and a current collector, and the cycleability of battery. A current collector containing copper(Cu) is characterized in that the ratio of I / I between the peak intensity I caused by the crystal plane of copper obtained with the X-ray diffraction and the peak intensity I caused by the crystal plane is 0.5-1.5. The current collector has a plurality of copper determinants and the cross section of each determinant is 100 micrometer square or less. 10-point average roughness Rz of the surface is 1.5-5.5 micrometer.