Nanostructured Li-Rich Fluoride Coated by Ionic Liquid as High Ion-Conductivity Solid Electrolyte Additive to Suppress Dendrite Growth at Li Metal Anode
文献类型：期刊论文
| 作者 | Hu, Jiulin1,2; Chen, Keyi1,2; Li, Chilin1 |
| 刊名 | ACS Applied Materials and Interfaces
 |
| 出版日期 | 2018 |
| ISSN号 | 19448244 |
| DOI | 10.1021/acsami.8b12579 |
| 英文摘要 | Blending additive with electrolyte is a facile and effective method to suppress anode dendrite growth in Li metal batteries (LMBs), especially when a LiF-rich solid electrolyte interface (SEI) is formed as a consequence of additive decomposition or deposition. However LiF still suffers from poor bulk ion conductivity as well as the difficult access to tailored nanostructure. Exploring new Li fluoride of high Li-ion conductivity as SEI component is still a big challenge in view of the lacking of desired structure prototype or mineral phase. Here, we propose a Li-rich Li3AlF6 derivative from cryolite phase as solid electrolyte additive, which is characterized by textured nanoporous morphology and ionic liquid coating. Its room temperature ion conductivity is as high as ∼10-5 S/cm with a low activation energy of 0.29 eV, the best level among fluoride-based solid electrolytes. These features guarantee a homogenization of Li+ fluxing through bulk and grain boundary of Li3AlF6-rich SEI and reinforce the effect on Li dendrite suppression. Li3AlF6 additive enables a stable cyclability of Li Li symmetric cells for at least 100 cycles even under a high areal capacity of 3 mA h/cm2 and a significant improvement on capacity retention for various LMBs based on LiFePO4, FeS2, and S cathodes. © 2018 American Chemical Society. |
| 出版者 | American Chemical Society |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25304]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 2.University of Chinese Academy of Sciences, Beijing; 100039, China |
| 推荐引用方式 GB/T 7714 | Hu, Jiulin,Chen, Keyi,Li, Chilin. Nanostructured Li-Rich Fluoride Coated by Ionic Liquid as High Ion-Conductivity Solid Electrolyte Additive to Suppress Dendrite Growth at Li Metal Anode[J]. ACS Applied Materials and Interfaces,2018. |
| APA | Hu, Jiulin,Chen, Keyi,&Li, Chilin.(2018).Nanostructured Li-Rich Fluoride Coated by Ionic Liquid as High Ion-Conductivity Solid Electrolyte Additive to Suppress Dendrite Growth at Li Metal Anode.ACS Applied Materials and Interfaces. |
| MLA | Hu, Jiulin,et al."Nanostructured Li-Rich Fluoride Coated by Ionic Liquid as High Ion-Conductivity Solid Electrolyte Additive to Suppress Dendrite Growth at Li Metal Anode".ACS Applied Materials and Interfaces (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。