期刊
SOLID STATE IONICS
卷 255, 期 -, 页码 104-107出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2013.12.006
关键词
Li7La3Zr2O12; Sol-gel method; Garnet oxide; Liquid phase sintering; Solid electrolyte
资金
- Japan Science and Technology Agency (JST)
- Core Research for Evolutional Science and Technology (CREST) project
- Ministry of Education, Culture, Sports, Science and Technology of Japan
Al-doped Li2La3Zr2O12 (LLZ) was prepared by a sol-gel process using lithium nitrate, lanthanum nitrate hexahydrate, zirconium propoxide and aluminum tri-sec-butoxide as starting materials. Single phase of cubic LLZ was obtained by a heat treatment at 700 degrees C, which is lower than that in the solid state reaction process. The LLZ powders were sintered at 900 degrees C using LiBO2 or Li3BO3 to form composite solid electrolyte. In the composite sintered with LiBO2, La2Zr2O7 was formed as an impurity phase. On the other hand, in the composite sintered with Li3BO3, single phase of cubic LLZ was obtained. The composite of Al-doped LLZ and Li3BO3 sintered at 900 degrees C showed the total electrical conductivity of 1.9 x 10(-5) S cm(-1), while Al-doped LLZ pellet without additives showed 1.6 x 10(-6) S cm(-1). (C) 2013 Elsevier B.V. All rights reserved.
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