"Ultra-High Initial Coulombic Efficiency Induced by Interface Engineeri" by Yanhua Wan, Keming Song et al.
Abstract High initial coulombic efficiency is highly desired because it implies effective interface construction and few electrolyte consumption, indicating enhanced batteries’ life and power output. In this work, a high-capacity sodium storage material with FeS nanoclusters (≈1–2 nm) embedded in N, S-doped carbon matrix (FeS /N,S-C) was synthesized, the surface of which displays defects-repaired characteristic and detectable dot-matrix distributed Fe-N-C/Fe-S-C bonds. After the initial discharging process, the uniform ultra-thin NaF-rich (≈6.0 nm) solid electrolyte interphase was ob...
Source: uow.edu.au