| 论文标题 |
Directing (110) Oriented Lithium Deposition through High-flux Solid Electrolyte Interphase for Dendrite-free Lithium Metal Batteries |
| 作者 |
Zehui Sun, Yuankun Wang, Shenyu Shen, Xinyang Li, Prof. Xiaofei Hu, Prof. Mingyou Hu, Prof. Yaqiong Su, Prof. Shujiang Ding, Prof. Chunhui Xiao |
| 发表/完成日期 |
2023-08-22 |
| 期刊名称 |
Angewandte Chemie International Edition |
| 期卷 |
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| 相关文章 |
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| 论文简介 |
Controlling lithium (Li) electrocrystallization with preferred orientation is a promising strategy to realize highly reversible Li metal batteries (LMBs) but lack of facile regulation methods. Herein, we report a high-flux solid electrolyte interphase (SEI) strategy to direct (110) preferred Li deposition even on (200)-orientated Li substrate. Bravais rule and Curie-Wulff principle are expanded in Li electrocrystallization process to decouple the relationship between SEI engineering and preferred crystal orientation. Multi-spectroscopic techniques combined with dynamics analysis reveal that the high-flux CF3Si(CH3)3 (F3) induced SEI (F3-SEI) with high LiF and −Si(CH3)3 contents can ingeniously accelerate Li+ transport dynamics and ensure the sufficient Li+ concentration below SEI to direct Li (110) orientation. The induced Li (110) can in turn further promote the surface migration of Li atoms to avoid tip aggregation, resulting in a planar, dendrite-free morphology of Li. As a result, our F3-SEI enables ultra-long stability of Li||Li symmetrical cells for more than 336 days. Furthermore, F3-SEI modified Li can significantly enhance the cycle life of Li||LiFePO4 and Li||NCM811 coin and pouch full cells in practical conditions. Our crystallographic strategy for Li dendrite suppression paves a path to achieve reliable LMBs and may provide guidance for the preferred orientation of other metal crystals. |
(创新港)
