Literature Seminar:

Lithium Metal Batteries (LMBs) are an exciting alternative to Lithium-ion Batteries (LIBs) due to the theoretical capacity of Li-metal anodes (3861 mAh/g). Despite this excitement, LMBs are plagued by gross instability during the Li plating/stripping process, which is thought to result from the formation of an unstable Solid-electrolyte Interphase (SEI). Much work has been conducted in the field toward stabilizing the SEI in LMBs via enhancing/enriching the SEIs of LMBs with the inorganic compound LiF. Lithium Fluoride layers in the SEI of LMBs can be formed in solution (in-situ LiF) or before cell assembly (ex-situ LiF), although the intrinsic role of LiF in the SEI is still unclear. I will share how He et al. 2018 used the study of LiF layers in LMBs to determine that SEI repair is the most important factor concerning the efficient plating/stripping of Li in LMBs. The most pertinent of their experiments and results will be discussed, and subsequently referenced versus the general consensuses held with-in the battery literature.