Surface Modified by SnI2 Boosts Dendrite-Free All-Solid-state Lithium Metal Batteries
JOURNAL OF ELECTROANALYTICAL CHEMISTRY(2023)
摘要
Lithium metal is the most promising next-generation anode due to its extremely high theoretical specific capacity and lowest operation potential. However, the high reactivity of lithium brings about a series of side reactions and fast capacity decay. Moreover, the inevitably growth of lithium dendrite will cause short circuit or other safety issues. Here, an artificial mixed ionic/electronic SEI (solid electrolyte interphase) is designed by treating the lithium anode with SnI2 solution in a simple drop coating method. The artificial SEI can inhibit the dendrite growth by forming nuclear agent sites and enable uniform current distribution. Solid state electrolyte is further utilized to improve the safety of battery. The symmetrical cells can cycle for > 750 h at 0.2 mA cm(-2). Notably, all-solid-state LiFePO4 (LFP)/Li battery can deliver excellent capacity remains 120.6 mAh g(-1) after 1000 cycles at 1C with a higher Coulombic efficiency at 99.8%. These results may be also useful for the developing of high energy and high safety lithium metal batteries.
更多查看译文
关键词
All -solid-state Lithium battery,Halides,Drop coating method,Interfaces modification
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要