Secondary battery, method for preparing corresponding positive electrode active material, battery module, battery pack, and electrical apparatus

Abstract

The present application relates to a secondary battery, comprising (1) a positive electrode plate; and (2) an electrolyte solution; wherein a positive electrode active material is an active material having a chemical formula of AxB1-xMeO2 or AxB1-xMPO4 with dications A and B, where Me, M, A, B, and x are as defined in the specification; and the electrolyte solution comprises an electrolyte salt of the dications A and B, where A and B are as defined in the positive electrode active material; as well as a method for preparing a corresponding positive electrode active material, a corresponding battery module, a battery pack, and an electrical apparatus. The secondary battery of the present application comprises a positive electrode active material comprising the dications A and B and an electrolyte solution of a salt of the same dications.

Dependencies are inferred from the claim text.