LITHIUM SECONDARY BATTERY ELECTROLYTE CONTAINING ADDITIVE

摘要

PURPOSE:To provide an electrolyte for a lithium secondary battery containing an additive for enhancing charge/discharge reversibility of a metallic lithium negative electrode. CONSTITUTION:A compound comprising a cation of metal capable of alloying with lithium and an iodide anion is contained as an additive in a range of 10ppm to 2000ppm in an electrolyte prepared by dissolving a lithium salt in a nonaqueous solvent. Metallic lithium is used in a negative electrode.