A LITHIUM SECONDARY BATTERY COMPRISING A POLYMER ELECTROLYTE FABRICATED BY A SPRAY METHOD AND ITS FABRICATION METHOD

摘要

The present invention provides a lithium secondary battery and its fabrication method. More particularly, the present invention provides a lithium secondary battery comprising a porous polymer electrolyte and its fabrication method, wherein the polymer electrolyte is fabricated by the following process: a) dissolving at least one polymer with plasticizers and organic electrolyte solvents to obtain at least one polymeric electrolyte solution; b) adding the obtained polymeric electrolyte solution to a barrel of a spray machine, and c) spraying the polymeric electrolyte solution onto a substrate using a nozzle to form a porous polymer electrolyte film. The lithium secondary battery of the present invention has advantages of better adhesion with electrodes, good mechanical strength, better performance at low and high temperatures, better compatibility with organic electrolytes of a lithium secondary battery.