COMPOSITION FOR ELECTROCHEMICAL DEVICE FUNCTIONAL LAYER, FUNCTIONAL LAYER FOR ELECTROCHEMICAL DEVICE, LAMINATE FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE

A composition for an electrochemical device functional layer contains non-conductive heat-resistant particles and a particulate polymer having a particle diameter distribution value (Dv/Dn) of not less than 1.00 and less than 1.10.