Abstract: An electrode assembly includes a water-based positive electrode plate and a negative electrode plate, wherein the water-based positive electrode plate includes a positive electrode current collector and a positive electrode film layer located on at least one surface of the positive electrode current collector; and the negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector; at least part of surface of the water-based positive electrode plate is provided with a plurality of first micropores, and satisfies: 0.001%?(S12×H12×D1)/(S11×C1×H11)?1%, at least part of surface of the negative electrode plate is provided with a plurality of second micropores, and satisfies: 0<(S22×H22×D2)/(S21×C2×H21)?2.5%.

Abstract: An electrode assembly includes a water-based positive electrode plate and a negative electrode plate, wherein the water-based positive electrode plate includes a positive electrode current collector and a positive electrode film layer located on at least one surface of the positive electrode current collector; and the negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector; at least part of surface of the water-based positive electrode plate is provided with a plurality of first micropores, and satisfies: 0.001%?(S12×H12×D1)/(S11×C1×H11)?1%, at least part of surface of the negative electrode plate is provided with a plurality of second micropores, and satisfies: 0<(S22×H22×D2)/(S21×C2×H21)?2.5%.

Abstract: This application provides a conductive slurry, a current collector, a secondary battery, a battery module, a battery pack, and an electric apparatus. The conductive slurry in this application includes the following raw material components: an aqueous binder including an aqueous polymer having polycarboxyl functionality, a conductive agent, a dispersant, and a curing agent, where the curing agent is used for cross-linking reaction with the aqueous polymer having polycarboxyl functionality. The conductive slurry in embodiments of this application has relatively good conductivity and adhesion performance as well as relatively good water resistance, which can improve stability of the secondary battery during operation and prolong its cycle life.

Abstract: A positive electrode active material composition, a water-based positive electrode slurry, a positive electrode plate, a secondary battery, and an electrical device are disclosed. The positive electrode active material composition includes a first positive electrode active material, a second positive electrode active material, and a third positive electrode active material, the first positive electrode active material has a volume average particle size Dv50 denoted as A1 in ?m, with A1 satisfying 0.2?A1?0.8; the second positive electrode active material has a volume average particle size Dv50 denoted as A2 in ?m, with A2 satisfying 1.0?A2?2.5; and the third positive electrode active material has a volume average particle size Dv50 denoted as A3 in ?m, with A3 satisfying 3.0?A3?6.0. The positive electrode plate of the present application has both a higher compaction density and a lower water content.

Abstract: This application provides a positive electrode slurry including a solid inclusion and water, where the solid inclusion includes a positive electrode active material capable of intercalating and deintercalating lithium ions and lithium-containing graphene.

Abstract: The present application relates to an aqueous positive electrode sheet, including a current collector and a positive electrode active substance layer provided on at least one surface of the current collector, the positive electrode active substance layer including an aqueous binder, where bond strength AT between the positive electrode active substance layer and the current collector and cohesive CT of the positive electrode active substance layer itself satisfy the following relationship: 1?CT/AT?10. The present application further relates to a secondary battery including the aqueous positive electrode sheet, a battery pack including the secondary battery, and a power consumption apparatus including the battery pack.

Abstract: The present application relates to an aqueous positive electrode sheet, which may include a current collector and a positive electrode active substance layer provided on at least one surface of the current collector, the positive electrode active substance layer may include an aqueous binder, where the porosity of a surface area of the positive electrode active substance layer may be greater than the porosity of an inner area of the positive electrode active substance layer, and the average particle size of the positive electrode active material in the surface area may be greater than the average particle size of the positive electrode active material in the inner area. The present application further relates to a secondary battery including the aqueous positive electrode sheet, a battery pack including the secondary battery, and a power consumption apparatus including the battery pack.