Lithium Nitrate Effects for Lithium‐Based Chemical Batteries: A Review

ABSTRACT Lithium metal batteries (LMBs) have been regarded as one of the most promising alternatives in the post‐lithium battery era due to their high energy density, which meets the needs of light‐weight electronic devices and long‐range electric vehicles. However, technical barriers such as dendrite growth and poor Li plating/stripping reversibility severely hinder the practical application of LMBs. However, lithium nitrate (LiNO 3 ) is found to be able to stabilize the Li/electrolyte interface and has been used to address the above challenges. To date, considerable research efforts have been devoted toward understanding the roles of LiNO 3 in regulating the surface properties of Li anodes and toward the development of many effective strategies. These research efforts are partially mentioned in some articles on LMBs and yet have not been reviewed systematically. To fill this gap, we discuss the recent advances in fundamental and technological research on LiNO 3 and its derivatives for improving the performances of LMBs, particularly for Li–sulfur (S), Li–oxygen (O), and Li–Li‐containing transition‐metal oxide (LTMO) batteries, as well as LiNO 3 ‐containing recipes for precursors in battery materials and interphase fabrication. This review pays attention to the effects of LiNO 3 in lithium‐based batteries, aiming to provide scientific guidance for the optimization of electrode/electrolyte interfaces and enrich the design of advanced LMBs.