Additive for non-aqueous electrolyte of electric double layer capacitor, non-aqueous electrolyte for electric double layer capacitor and non-aqueous electrolyte electric double layer capacitor

摘要

This invention relates to an additive for a non-aqueous electrolyte of an electric double layer capacitor comprising a combustion inhibiting substance releasing compound capable of releasing a combustion inhibiting substance having particularly excellent combustion inhibiting effect during combustion, and more particularly to an additive for a non-aqueous electrolyte of an electric double layer capacitor comprising a combustion inhibiting substance releasing compound which releases a combustion inhibiting substance during combustion, characterized in that the combustion inhibiting substance is a phosphine oxide compound having P—F bond and/or P—NH₂ bond in its molecule.