We propose a novel binary electrolyte of lithium bis(fluorosulfonyl)imide/1,3-dioxolane, that exhibits excellent performance for the suppression of lithium-dendrite growth and stability against lithium metal. With 2.5 M lithium bis(fluorosulfonyl)imide in 1,3-dioxolane, long short-circuit onset-times of 72.3 and > 190 h are observed in Li/Li cells polarized at galvanostatic current densities of 1.0 and 0.5 mA cm^− 2, respectively. The coulombic efficiencies for the repeated Li plating/stripping in the 2.5 M electrolyte at 1.0 and 0.5 mA cm^− 2 are as high as 99.0% and 99.5%, respectively. The electrolyte structure is changed with an increase in the concentration speculated from Raman spectra, which enables the reactivity toward lithium metal to be lowered.

我们提出了一种新颖的双（氟磺酰基）亚胺锂/ 1,3-二氧戊环锂二元电解质，该电解质具有出色的抑制锂树枝状晶体生长的性能以及对锂金属的稳定性。在1,3-二氧戊环中使用2.5 M双（氟磺酰基）酰亚胺锂，在恒电流密度为1.0和0.5 mA cm ^-2的极化Li / Li电池中，观察到较长的短路开始时间为72.3和> 190 h ，分别。在2.5和1.0 mA cm ^-2的2.5 M电解质中重复进行Li镀/剥离的库仑效率分别高达99.0％和99.5％。电解质结构随着从拉曼光谱推测的浓度的增加而改变，这使得对锂金属的反应性降低。