HYBRID ELECTROLYTE COMPRISING LITHIUM OXIDES AND POLYMER SYSTEMS FOR LI BATTERIES AND LI ION BATTERIES COMPRISING THE SAME

摘要

The present invention relates to a lithium secondary battery including a film-shaped electrolyte, and a method for producing the same. The lithium secondary battery comprises: a lithium oxide powder having a garnet structure including Li-La-B-O (herein, B is at least one element consisting of Bi, Sb, Na, Ta, Zr, Hf, and Sn); and a film-shaped composite electrolyte including at least one polymer selected from the group consisting of polyethylene oxide, polypropylene oxide (PPO), and glycidol. A weight ratio of the lithium oxide powder and the polymer in the composite electrolyte is in a range of 35:65-65:35. According to the present invention, a lithium secondary battery having high mechanical strength, capable of being easily molded, and having high ion conductivity can be produced.