New lithium-ion conducting perovskite oxides related to (Li, La)TiO3 |
| |
| Authors: | Litty Sebastian A K Shukla and J Gopalakrishnan |
| |
| Institution: | (1) Solid State and Structural Chemistry Unit, Indian Institute of Science, 560 012 Bangalore, India |
| |
| Abstract: | We describe the synthesis and lithium-ion conductivity of new perovskite-related oxides of the formulas, LiCa1.65□0.35Ti1.3B1.7O9 (B =Nb,Ta)(I,II), LiSr2Ti2.5W0.5O9 (III) and LiSr1.65□0.35Ti2.15W0.85O9(IV). OxidesI andII crystallize in orthorhombic (GdFeO3-type) structure, while oxidesIII andIV possess cubic symmetry. All of them exhibit significant lithium-ion conduction at high temperatures, the highest conductivity
of ∼ 10−2S/cm at 800°C among the oxides is exhibited by the composition IV. The results are discussed in the light of previous work
on lithium-ion conducting perovskite oxides containingd
0
cations. |
| |
| Keywords: | Lithium ion conductors lithium-lanthanum perovskites lithium-lanthanum titanates |
| 本文献已被 SpringerLink 等数据库收录！ |
|
