Tailoring Electrode‐Electrolyte Interfaces via Electrolyte Additive Engineering for Reliable 5 V‐Class 500 Wh Kg −1 Lithium Metal Batteries

NCM90||Li pouch cells surprisingly pass the nail penetration tests, highlighting the prominent safety. This straightforward and cost-effective approach provides an inspirational strategy for the safe application of LMBs by reinforcing the interface stability and reconciling the electrolyte flame retardancy.