Nonaqueous secondary battery

摘要

A nonaqueous secondary battery excellent in charge and discharge cycle characteristics and having a high capacity and improved first cycle efficiency and production fitness is disclosed, which comprises a battery case enclosing therein a positive electrode and a negative electrode capable of intercalating and deintercalating lithium and a nonaqueous electrolytic solution containing a lithium salt, wherein one or both of the positive electrode and the negative electrode contains a copolymer comprising an acrylic or methacrylic ester, acrylonitrile and a vinyl monomer having an acid moiety.