Journal
SOLID STATE IONICS
Volume 233, Issue -, Pages 102-106Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2012.12.007
Keywords
Solid electrolyte; Lithium ion conductor; Garnet-type; Cubic structure
Categories
Funding
- New Energy and Industrial Technology Development Organization (NEDO) of Japan
- Ministry of Education, Culture, Sports, Science and Technology of Japan [B22350091]
- Grants-in-Aid for Scientific Research [22350091] Funding Source: KAKEN
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Low temperature cubic garnet-type Li7La3Zr2O12 was obtained by annealing the tetragonal Li7La3Zr2O12 at 450 degrees C for 20 h in air. The cubic phase was not observed by annealing at 450 degrees C in oxygen and argon atmospheres. The phase transition of the tetragonal to cubic phase was reversible in air and could be explained by CO2 absorption of around 2.5 wt.%. The low temperature cubic Li7La3Zr2O12 had a low bulk ionic conductivity of 1.3 x 10(-6) S cm(-1) at 25 degrees C, which is lower than those of the tetragonal Li7La3Zr2O12 (3.3 x 10(-6) S cm(-1)) and high temperature cubic phases (5.8 x 10(-4) S cm(-1)). (C) 2012 Elsevier B.V. All rights reserved.
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