LITHIUM-ION BATTERY POSITIVE ELECTRODE PLATE, LITHIUM-ION BATTERY WITH SAME, AND ELECTRICAL APPARATUS

The present application provides a lithium-ion battery positive electrode plate, comprising a positive electrode current collector and a positive electrode film layer disposed on at least one surface of the positive electrode current collector, wherein the positive electrode film layer comprises a positive electrode active material mixture composed of the following materials: polycrystalline particles of a first positive electrode active material with a particle size of 11.0-20.0 µm; polycrystalline particles of a second positive electrode active material with a particle size of 6.0-10.5 µm;and monocrystalline particles of a third positive electrode active material with a particle size of 1.1-5.2 µm; wherein the number of the polycrystalline particles of the first positive electrode active material is a, the number of the polycrystalline particles of the second positive electrode active material is b, the number of the monocrystalline particles of the third positive electrode active material is c, and (a+b):c is in the range of 5.7:4.3 to 7.7:2.3. The present application further provides a lithium-ion battery with the positive electrode plate, a battery module, a battery pack and an electrical apparatus.