COMPOSITION FOR ADDITION TO ELECTROLYTE SOLUTIONS CONTAINING SILYL GROUP-CONTAINING COMPOUND, ELECTROLYTE SOLUTION FOR NONAQUEOUS ELECTRICITY STORAGE DEVICES CONTAINING SAID COMPOSITION, AND LITHIUM ION SECONDARY BATTERY CONTAINING SAID ELECTROLYTE SOLUTION

摘要

The present invention addresses the problem of providing a composition for addition to electrolyte solutions, which improves storage stability of a silyl group-containing compound that is a useful additive for lithium ion secondary batteries. The description of this application sets forth a composition for addition to electrolyte solutions, which contains one or more silyl group-containing compounds (compound (a)) and one or more basic compounds and/or silicon compounds (compound (b)).