NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

Provided is a non-aqueous electrolyte secondary battery in which an increase in resistance is suppressed when high rate pulsed charging and discharging is repeatedly carried out. The non-aqueous electrolyte secondary battery provided by the present disclosure is provided with: a positive electrode; a negative electrode; a separator; and a non-aqueous electrolyte solution. The separator is provided with a separator base made of a non-woven fabric; a first resin layer provided on a surface of the separator base that faces the positive electrode; and a second resin layer provided on a surface of the separator base that faces the negative electrode. In addition, a resin matrix of the first resin layer is constituted from polytetrafluoroethylene or a copolymer containing polytetrafluoroethylene as a primary component, and a resin matrix of the second resin layer is constituted from poly(vinylidene fluoride) or a copolymer containing poly(vinylidene fluoride) as a primary component.

主权项

1. A non-aqueous electrolyte secondary battery comprising:
a positive electrode; a negative electrode; a separator interposed between the positive electrode and negative electrode, the separator comprising:
a separator base made of a non-woven fabric;a first resin layer provided on a surface of the separator base that faces the positive electrode; anda second resin layer provided on a surface of the separator base that faces the negative electrode;and
a non-aqueous electrolyte solution, wherein a resin matrix of the first resin layer is constituted from at least one of polytetrafluoroethylene and a copolymer containing polytetrafluoroethylene as a primary component, and a resin matrix of the second resin layer is constituted from at least one of poly(vinylidene fluoride) and a copolymer containing poly(vinylidene fluoride) as a primary component.