Sintering, micro-structure and Li+ conductivity of Li7-xLa3Zr2-xNbxO12/MgO (x=0.2-0.7) Li-Garnet composite ceramics
文献类型：期刊论文
| 作者 | Huang, Xiao; Song, Zhen; Xiu, Tongping; Badding, Michael E.; Wen, Zhaoyin |
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2019-01-30 |
| 卷号 | 45期号:1页码:56 |
| 关键词 | Li-Garnet c-LLZO Solid electrolyte Nb-doping High conductivity Sintering |
| ISSN号 | 0272-8842 |
| DOI | 10.1016/j.ceramint.2018.09.133 |
| 文献子类 | Article |
| 英文摘要 | Nb-doped Li7La3Zr2O12 (Nb-LLZO) is one of the promising electrolyte candidates in the Li-Garnet family due to its high Li-ion conductivity. The sintered Nb-LLZO ceramics, however, often exhibit abnormal grain growth with high porosity and poor mechanical properties. For advantaged electrochemical and mechanical properties, a uniform and dense microstructure is desired. In this research, MgO has been added as a secondary phase to inhibit abnormal grain growth in Nb-LLZO. The sintering process of the Nb-LLZO/MgO composite ceramics has been studied for different Nb doping levels (0.2-0.7 pfu) at sintering conditions of 1250 degrees C for 1-360 min. The ceramic density, microstructure, and Li-ion conductivity are reported. The composite ceramics have shown a very fast sintering speed. At 1250 degrees C, the 0.4Nb-LLZO/MgO composite can be well-sintered in 1 min. For sintering at 1250 degrees C for 40 min, ceramic samples showing relative density of 97%, conductivity of 6 x 10(-4) S cm(-1) at 25 degrees C, and activation energy of 0.40 eV are obtained. |
| WOS关键词 | HIGH IONIC-CONDUCTIVITY ; DOPED LI7LA3ZR2O12 ; CRYSTAL-STRUCTURE ; ELECTROCHEMICAL PROPERTIES ; NB ; SUBSTITUTION ; LI5LA3NB2O12 ; STABILITY ; AL ; ELECTROLYTES |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27568]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Huang, Xiao,Song, Zhen,Xiu, Tongping,et al. Sintering, micro-structure and Li+ conductivity of Li7-xLa3Zr2-xNbxO12/MgO (x=0.2-0.7) Li-Garnet composite ceramics[J]. CERAMICS INTERNATIONAL,2019,45(1):56. |
| APA | Huang, Xiao,Song, Zhen,Xiu, Tongping,Badding, Michael E.,&Wen, Zhaoyin.(2019).Sintering, micro-structure and Li+ conductivity of Li7-xLa3Zr2-xNbxO12/MgO (x=0.2-0.7) Li-Garnet composite ceramics.CERAMICS INTERNATIONAL,45(1),56. |
| MLA | Huang, Xiao,et al."Sintering, micro-structure and Li+ conductivity of Li7-xLa3Zr2-xNbxO12/MgO (x=0.2-0.7) Li-Garnet composite ceramics".CERAMICS INTERNATIONAL 45.1(2019):56. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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