Copper-aluminum battery electrode and processing method thereof

Abstract

The invention discloses a copper-aluminum battery electrode which comprises an electrode material, fiber nets, a current collector and nanopores, wherein the two sides of the current collector are coated with the fiber nets; the outer sides of the fiber nets are coated with the electrode material; the nanopores penetrating through the current collector are formed in the current collector; the electrode material consists of the following raw material in parts by weight: 40-60 parts of copper, 40-60 parts of aluminum, 20-35 parts of high density polyethylene, 15-30 parts of high-density polypropylene, 5-10 parts of polyvinyl butyral, 10-18 parts of carbon nanotubes, 2-6 parts of alkyl aryl sodium sulfonate, 1-5 parts of stearic acid, 15-30 parts of conductive carbon black, 5-10 parts of phenolic aldehyde, 1-4 parts of an adhesive and 10-15 parts of graphite. The nanopores are formed in the current collector of the copper-aluminum battery electrode, so that capacities on two sides can be supplemented by each other, the service life of the battery is prolonged, and the electrode material has the advantages of low resistance, good stability, large specific surface area and the like.

Description

technical field [0001] The invention relates to the field of battery electrodes, in particular to a copper-aluminum battery electrode and a processing method thereof. Background technique [0002] Lithium-ion batteries are mainly composed of positive electrodes, negative electrodes, electrolytes, separators, and casings. At present, the positive and negative current collectors of the battery are aluminum foil and copper foil respectively, and the electrode material is coated on both sides of the current collector. However, the capacity of the electrode materials on both sides of the current collector cannot complement each other, resulting in capacity loss and shortening the service life of the battery. In addition, the existing electrode materials are insufficient in terms of resistivity, stability, and specific surface area. Therefore, a copper-aluminum battery electrode and its processing method are designed to overcome the deficiencies in the prior art. Contents of th...

AI Technical Summary

Problems solved by technology

However, the capacity of the electrode materials on both sides of the current collector cannot complement each other, resulting in capacity loss and shortening the service life of the battery. In addition, the existing electrode materials have deficiencies in resistivity, stability, specific surface area, etc.

Images