A Dual-Additive Strategy Constructing Robust Li 3 N-Rich SEI and Proton Scavenging for High-Rate Lithium Metal Batteries

Abstract

The synergistic combination of 3-cyano-1,2,4-triazole (CTZ) and 1-(Trimethylsilyl)imidazole (TMSIM), featuring π-donoracceptor (π-DA) interactions, facilitates the formation of a Li3N-rich solid electrolyte interphase (SEI) with high mechanical strength and ionic conductivity. This interface enables Li|| LiFePO4 (LFP) batteries to maintain 96.74% capacity after 1200 cycles at 5 C, offering a promising strategy for fast-charging lithium metal batteries.