Directing (110) Oriented Lithium Deposition through High-flux Solid Electrolyte Interphase for Dendrite-free Lithium Metal Batteries

被引:23
作者
Sun, Zehui [1 ]
Wang, Yuankun [1 ]
Shen, Shenyu [1 ]
Li, Xinyang [1 ]
Hu, Xiaofei [1 ]
Hu, Mingyou [1 ]
Su, Yaqiong [1 ]
Ding, Shujiang [1 ]
Xiao, Chunhui [1 ]
机构
[1] Xi An Jiao Tong Univ, Engn Res Ctr Energy Storage Mat & Devices, Sch Chem, State Key Lab Mech Behav Mat,Minist Educ, Xian 710049, Peoples R China
基金
芬兰科学院; 中国国家自然科学基金;
关键词
Dendrite-Free; Electrocrystallization; Lithium Metal Batteries; Planar Deposition; Preferred Crystal Orientation; ENERGY; GROWTH; LAYER; ANODE; THIN;
D O I
10.1002/anie.202309622
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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. (110) orientated lithium (Li) deposition is achieved via high-flux solid electrolyte interphase. Bravais rule and Curie-Wulff principle clarify Li electrocrystallization process. Long-term Li deposition regulation ability is realized. Planar and dendrite-free (110) orientated Li enables Li||LiFePO4, Li||NCM811 cells in practical conditions dramatically improved electrochemical performance.+image
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页数:12
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