Current collector, lithium ion battery and electric equipment

The invention relates to a current collector, a lithium ion battery and electric equipment, in particular to the current collector which comprises a supporting layer and metal layers, the metal layers are arranged on the two sides of the supporting layer in the thickness direction, and the supporting layer is of a pore structure. The pore structure is formed on the supporting layer, so that the problem of pole piece wrinkling caused by the current collector under the pressure of a high-pressure roller can be avoided, the yield of the pole piece is improved, and the compaction density of the pole piece is improved. 本申请涉及一种集流体、锂离子电池及用电设备，具体为：一种集流体，包括支撑层和金属层，所述金属层设置在所述支撑层厚度方向的两侧，所述支撑层具有孔隙结构。在支撑层上形成孔隙结构，可以避免集流体在高压辊压下导致的极片褶皱的问题，提升极片良率，提高极片的压实密度。