Polymer-based negative current collector and lithium ion battery containing same

• Main Authors: ZHUANG ZHI, CHENG YUE, CAI HONGXIN, GUO HONGWEI, XIE PENGCHENG, BAO JINZHEN, WANG RUYOU, WANG YINGLI, YU SHAOBO, YUAN KAIJIE
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The utility model discloses a polymer-based negative current collector and a lithium ion battery containing the same. The polymer-based negative current collector is provided with a polymer supporting layer and a protective conductive composite layer positioned on the surface of the supporting layer, the protective conductive composite layer is provided with a conductive material with a large particle size and a protective material with a small particle size, and due to the self-arrangement effect caused by the fact that the particle size of the protective material is different from that of the conductive material, the particles of the conductive material and the particles of the protective material are distributed on the side close to the supporting layer and the other side away from the supporting layer respectively. In addition, the conductive polymer with high strength and rich unsaturated functional groups can reduce the thickness of the supporting layer and can be fully bonded with the conductive protec