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, Xiao1,4; Song, Zhen2; Xiu, Tongping3; Badding, Michael E.2; Wen, Zhaoyin1,4 |
| 刊名 | Ceramics International
 |
| 出版日期 | 2018 |
| ISSN号 | 02728842 |
| DOI | 10.1016/j.ceramint.2018.09.133 |
| 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 °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 °C, the 0.4Nb-LLZO/MgO composite can be well-sintered in 1 min. For sintering at 1250 °C for 40 min, ceramic samples showing relative density of 97%, conductivity of 6 × 10−4 S cm−1 at 25 °C, and activation energy of 0.40 eV are obtained. © 2018 |
| 出版者 | Elsevier Ltd |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25244]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai; 200050, China; 2.Corning Incorporated, Corning; NY; 14831, United States; 3.Corning Research Center China, 200 Jinsu Road, Shanghai; 201206, China; 4.University of Chinese Academy of Sciences, 19A Yuquan Rd, Shijingshan District, Beijing; 100049, China |
| 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,2018. |
| APA | Huang, Xiao,Song, Zhen,Xiu, Tongping,Badding, Michael E.,&Wen, Zhaoyin.(2018).Sintering, micro-structure and Li+ conductivity of Li7−xLa3Zr2−xNbxO12/MgO (x = 0.2–0.7) Li-Garnet composite ceramics.Ceramics International. |
| 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 (2018). |
入库方式： OAI收割
来源：上海硅酸盐研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。