ELECTROLYTE ADDITIVE FOR LITHIUM SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING THE ELECTROLYTE ADDITIVE

摘要

The present invention provides a non-aqueous electrolyte comprising: an additive which is an isocyanate-based compound comprising a non-aqueous organic solvent, a lithium salt, and a carbon-carbon triple bond; and the isocyanate-based compound comprising a carbon-carbon triple bond. In the case where the isocyanate-based compound additive comprising a carbon-carbon triple bond of the present invention is included in a non-aqueous electrolyte, lifespan properties and high temperature durability may be enhanced, and the internal resistance of a battery may be reduced.