Patent ID: 9698430
Date: 2017-07-04
CPC Classifications: C04B,H01M,Y02E

Claim:
1. Lithium-lanthanum-titanium oxide sintered material, wherein the material is described by one of general formulas (1-a)La x Li 2-3x TiO 3 -aSrTiO 3 , (1-a)La x Li 2-3x TiO 3 -aLa 0.5 K 0.5 TiO 3 , La x Li 2-3x Ti 1-a M a O 3-a , and Sr x-1.5a La a Li 1.5-2x Ti 0.5 Ta 0.5 O 3 , and wherein 0.55≦x≦0.59, 0≦a≦0.2, M=at least one of Fe and Ga, and concentration of S is 400 ppm or less, and wherein lithium ion conductivity calculated by the following formula using an impedance analyzer in measuring frequency 5 to 13 MHz and a measuring temperature of 27° C. is 3.0×10 −4 Scm −1 or more, R b (Ω) being resistance inside of particle R gb (Ω) being resistance at interface of particle, L(cm) being thickness of tabular lithium-lanthanum-titanium oxide, and S(cm 2 ) being area of electrode,