Abstract: Embodiments of the present application provide a positive electrode plate, a secondary battery and an electrical apparatus. The positive electrode plate includes a positive electrode current collector and a positive electrode film layer arranged on at least one side of the positive electrode current collector, where the positive electrode film layer includes a first film layer and a second film layer in a thickness direction of the positive electrode plate; the first film layer includes a lithium transition metal phosphate and a carbon coating applied on at least part of the surface of the lithium transition metal phosphate, and the second film layer includes a lithium transition metal oxide and a conductive agent; and a resistivity difference between the second film layer and the first film layer is 10-200 ?·cm.

Abstract: A positive electrode plate includes: a positive electrode current collector, a first film layer, a second film layer, and a third film layer, where the third film layer is located between the first film layer and the second film layer, the first film layer is located on a surface of at least one side of the positive electrode current collector and is closer to the positive electrode current collector than the second film layer; the first film layer includes a first active material, and the first active material includes a layered structure material; the second film layer includes a second active material, and the second active material includes at least one of an olivine structure material and a spinel structure material; and the third film layer is used for isolating the first active material from the second active material.

Abstract: A positive electrode plate includes a current collector, a conductive coating, a first active material layer and a second active material layer, where the conductive coating is formed on a surface of the current collector, the first active material layer is formed on a surface of the conductive coating, and the second active material layer is formed on a surface of the first active material layer; the first active material layer includes a first active material; the second active material layer includes a second active material; the first active material does not catch fire in a nail penetration test; and the second active material has a gram capacity greater than or equal to 165 mAh/g.

Abstract: A positive electrode plate and a preparation method thereof, a battery cell, a battery, and an electric apparatus are described. The positive electrode plate includes: a positive electrode current collector and a first film layer and a second film layer disposed on the same side of at least one surface of the positive electrode current collector; where the first film layer includes a first active material, and the first active material includes at least one of a material with an olivine structure and a material with a spinel structure; the second film layer includes a second active material, and the second active material includes a material with a layered structure; a resistivity R1 of the first active material and a resistivity R2 of the second active material satisfy: 20?R2/R1?500. The technical solution of the embodiment of this application enhances the performance of the battery cell.

Abstract: A method for determining a service coverage area is provided. In an embodiment, the method includes: determining a trigger condition corresponding to each of a plurality of preset service scenarios for a target supplier; if it is determined that the trigger condition corresponding to any one of the service scenarios is satisfied, determining a target area corresponding to the target supplier in the service scenario; and switching a service coverage area of the target supplier to the target area.

Abstract: An information prompt method and apparatus and an electronic device are provided. The information prompt method includes: monitoring whether a target delivery order meets a preset activation condition (S101); obtaining, when the target delivery order meets the preset activation condition, auxiliary information corresponding to an order identifier of the target delivery order (S102), where the auxiliary information is determined based on an advance contact probability corresponding to the order identifier, the advance contact probability is determined based on a target historical order, and the target historical order is a historical order with the order identifier; and outputting prompt information when the auxiliary information meets a preset prompt condition (S103).