GEL POLYMER ELECTROLYTE AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

摘要

The present disclosure relates to a gel polymer electrolyte including an imide salt, and a lithium secondary battery including the same and having a protective film formed on a cathode tab. Disclosed are a gel polymer electrolyte that allows the production of a secondary battery having excellent quality with no corrosion of a cathode, while using, as an electrolyte, an imide-based salt effective for improvement of output quality and high-temperature storability, as well as a secondary battery including the same.

主权项

1. A gel polymer electrolyte obtained by polymerizing a composition for a gel polymer electrolyte comprising a polymerizable monomer, a polymerization initiator, an electrolyte salt and an electrolyte solvent, wherein the electrolyte salt is an imide salt.