Non-aqueous electrolyte secondary battery having an intermediate layer comprising metal-covered microcapsules

A non-aqueous electrolyte secondary battery comprising:

• an electrode current collector;
• an intermediate layer;
• and
• an electrode active material layer,
• the intermediate layer being interposed between the electrode current collector and the electrode active material layer and the intermediate layer contacting the electrode current collector and the electrode active material layer,
• the intermediate layer consisting essentially of from 1 mass % to 20 mass % of a binder and the remainder of a metal-covered microcapsule,
• the metal-covered microcapsule including a microcapsule and a metal film,
• the microcapsule including a core and a shell,
• the shell surrounding the core,
• the core including a volatile material comprising a liquid having a boiling temperature in a range of from 70° C. to 135° C.,
• the shell including a thermoplastic resin material,
• the metal film covering at least part of an outer surface of the shell of the microcapsule.