| 摘要 |
The present invention relates to a lithium secondary battery comprising a positive electrode, a negative electrode, and an electrolyte, wherein the electrolyte comprises imide-based salt, and the positive electrode comprises: a positive electrode current collector; a positive electrode tab protruding from the positive electrode current collector; and a protective film on the positive electrode tab. The present invention comprises the protective film on the positive electrode tab which is an exposed part of the positive electrode current collector, thereby blocking physical contact with the electrolyte including imide-based salt and preventing corrosion in advance, and improving output and high temperature storage properties of a secondary battery, which are advantages of the secondary battery due to use of imide-based salt. |
