Patent ID: 11923547
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A positive electrode plate, comprising a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein
the current collector comprises a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, a thickness D1 of the support layer satisfies 1 μm≤D1≤30 μm, and the support layer is made of a polymer material or a polymer composite material; and
the electrode active material layer comprises electrode active materials, a binder, and a conductive agent, and the electrode active materials comprise small particle active materials with an average particle size D50 of 1.0 μm to 7.0 μm and large particle active materials with an average particle size D50 of 7.1 μm to 20.0 μm, wherein D50 is a median particle size in volume distribution;
wherein a conductive primer layer is further disposed between the current collector and the electrode active material layer, the conductive primer layer comprises a conductive material and a binder, wherein the conductive material in the conductive primer layer comprises a conductive carbon material;
wherein a single-sided thickness H of the conductive primer layer is 0.1 μm to 5 μm, and a ratio of H to D2 is 0.5:1 to 5:1.