Quaternary Cu₂TSiS₄ (T = Fe, Mn) Anodes for Li-Ion Batteries.

ABSTRACT: Developing high-capacity and fast-charging anode materials is critical for achieving high-performance Li-ion batteries (LIBs). Herein, polycrystalline quaternary transition metal silicon sulfides, Cu₂TSiS₄ (T = Fe, Mn), were synthesized using a solid-state method and investigated as anode materials in LIBs. Cu₂FeSiS₄ retains a reversible capacity of 670 mAh g^-1 at 200 mA g^-1 for 400 cycles, while Cu₂MnSiS₄ suffers from a fast capacity loss in the initial 50 cycles. More importantly, Cu₂FeSiS₄ can maintain a reversible capacity of 379 mAh g^-1 after 700 cycles at a high current density of 2 A g^-1, demonstrating high cyclic stability and fast-charging capacity. T

SUBMITTER: Kim EY 

PROVIDER: S-EPMC11815620 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature