Lithium ion battery positive current collector, preparation method and lithium ion battery

Abstract

The invention discloses a lithium ion battery positive electrode current collector, a preparation method and a lithium ion battery, the lithium ion battery positive electrode current collector comprises a first aluminum layer, a second aluminum layer and a PET layer located between the first aluminum layer and the second aluminum layer, and the PET layer is of a latticed structure and is composed of a PET substrate and a conductive agent. The positive current collector of the lithium ion battery has relatively high binding power and electronic conductivity, and ensures that a secondary battery has relatively low internal resistance, long-term cycle stability of the battery and relatively high safety performance.

Description

technical field

[0001] The invention relates to the technical field of lithium-ion batteries, in particular to a lithium-ion battery cathode current collector, a preparation method and a lithium-ion battery. Background technique

[0002] Lithium-ion batteries have entered our daily life with the advancement of technology and the improvement of environmental protection requirements. With the popularization of lithium-ion batteries, there will occasionally be safety problems caused by external force piercing lithium-ion batteries at the user end, and its safety performance has attracted more and more attention, especially the continuous fermentation of some mobile phone explosions, making Users, after-sales and lithium-ion battery manufacturers have all put forward new requirements for the safety performance of lithium-ion batteries.

[0003] The current methods to improve the safety of lithium-ion batteries are all at the expense of the energy density of lithium-ion batterie...

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