Positive plate, lithium ion battery and electric equipment

Abstract

The embodiment of the invention discloses a positive plate, which comprises a positive current collector and an active material layer arranged on the positive current collector, the active material layer comprises a positive active material, a conductive agent, an adhesive and an over-discharge protective agent, the over-discharge protective agent comprises inorganic particles, the chemical formula of the inorganic particles is M1xM2y, M1 is selected from Mo, Sn, Ti, Re, Ta and Zr, and M2y is selected from Mo, Sn, Ti, Re, Ta and Zr. M < 2 > is selected from one or more of S, Se, Te and Po, 0 lt; x is less than or equal to 10, 0lt; y < = 10; and the mass of the over-discharge protective agent accounts for 0.05%-0.8% of the mass of the active material layer. The positive plate provided by the embodiment of the invention comprises the over-discharge protective agent, has over-discharge resistance, and can improve the cycle stability of the battery and prolong the service life of the battery when being applied to the non-negative lithium ion battery. The embodiment of the invention further provides the lithium ion battery and electric equipment.