期刊
JOURNAL OF POWER SOURCES
卷 248, 期 -, 页码 642-646出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2013.09.140
关键词
Lithium garnet electrolytes; Flowing oxygen sintering; Densification; Ionic conductivity
资金
- National Natural Science Foundation of China [U1232111]
High density (similar to 96%) garnet-type Al-contained Li6.75La3Zr1.75Ta0.25O12 (LLZTO-Al) solid electrolytes are prepared by conventional solid-state reaction and the following flowing oxygen sintering process. An overall ionic conductivity as high as 7.4 x 10(-4) S cm(-1) at 25 degrees C is achievable, remarkably higher than that obtained by sintering in other atmospheres. The dependence of density and conductivity of solid electrolytes on sintering under different oxygen partial pressures is discussed. Atmosphere sintering is proved to be an effective method to improve the relative density of lithium oxide ceramics. (C) 2013 Elsevier B.V. All rights reserved.
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