Binder composition for all solid state secondary battery, slurry composition for all solid state secondary battery electrode layer, slurry composition for whole solid state secondary battery solid electrolyte layer, and solid state rechargeable battery

摘要

The present invention is intended to provide a binder composition for all solid state secondary batteries capable of forming a solid electrolyte containing layer capable of exhibiting excellent output characteristics and high temperature cycling characteristics for all solid state rechargeable batteries.Binder composition of the present inventionContaining polymer aSaid polymer aContains a nitrile group containing monomer unit and aliphatic conjugated diene monomer unitThe content of the nitrile group containing monomer unit in the polymer A is 5 mass% or more and 30% by mass or less.The content of the aliphatic conjugated diene monomer unit is 40 mass% or more to 95% by mass or less;AndThe Mooney viscosity of the polymer aMore than 65 is 100 ° C.