POSITIVE ELECTRODE FOR SECONDARY BATTERIES, AND SECONDARY BATTERY

摘要

Disclosed is a positive electrode for secondary batteries, which can achieve high output properties, cycle properties and safety performance. The positive electrode for secondary batteries is characterized by comprising a current collector and an electrode active material layer which is laminated on the current collector and comprises a positive electrode active material comprising manganese and a binder, wherein the binder comprises a constituent unit derived from a (meth) acrylic acid ester monomer, a constituent unit derived from an vinyl monomer having an acid component, a constituent unit derived from an a,ß-unsaturated nitrile monomer, and a constituent unit derived from a monomer having a crosslinkable group, the content of the constituent unit derived from a vinyl monomer having an acid component in the binder is 1.0 to 3.0 mass%, and a constituent unit derived from allyl acrylate or a constituent unit derived from allyl methacrylate is contained as the constituent unit derived from a monomer having a crosslinkable group.