Patent ID: 8586139

Claim:
A method for producing an electrode composite material comprising an electrode active material and a solid electrolyte, the method comprising the steps of: preparing a starting material comprising Li, La, Ti and O and heating the starting material, wherein the composition ratio between Li, La and Ti of the starting material is in the range of a triangle having three vertices at LiO 0.5 :LaO 1.5 :TiO 2 =23:24:53, LiO 0.5 :LaO 1.5 :TiO 2 =5:36:59 and LiO 0.5 :LaO 1.5 :TiO 2 =8:28:64 in the LiO 0.5 —LaO 1.5 —TiO 2 triangular diagram.