Patent ID: 8709106
Filing Date: 2014-04-29
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A method for producing a lithium secondary battery anode member including a laminate of a lithium metal film and a solid electrolyte film on a substrate, wherein the solid electrolyte film has a crystallinity between amorphous and crystalline states and an X-ray diffraction pattern of the solid electrolyte film has peaks at 2θ of about 11° and 30° with a half width of 10° or less, the method comprising steps of: depositing the lithium metal film on the substrate; depositing the solid electrolyte film on the lithium metal film by using a mixture of powders of lithium sulfide (Li heating the solid electrolyte film at 75° C. to 170° C. for 5 minutes to 50 hours in a dry inert atmosphere, wherein the composition of the solid electrolyte film is xLi.yP.zS.wO wherein x, y, z, and w satisfy the relations, 0.2≦x≦0.45, 0.1≦y≦0.2, 0.35≦z≦0.6, and 0.03≦w≦0.13, respectively, (x+y+z+w=1).