Quantum-Size FeS₂ with Delocalized Electronic Regions Enable High-Performance Sodium-Ion Batteries Across Wide Temperatures.

ABSTRACT: Wide-temperature applications of sodium-ion batteries (SIBs) are severely limited by the sluggish ion insertion/diffusion kinetics of conversion-type anodes. Quantum-sized transition metal dichalcogenides possess unique advantages of charge delocalization and enrich uncoordinated electrons and short-range transfer kinetics, which are crucial to achieve rapid low-temperature charge transfer and high-temperature interface stability. Herein, a quantum-scale FeS₂ loaded on three-dimensional Ti₃C₂ MXene skeletons (FeS₂ QD/MXene) fabricated as SIBs anode, demonstrating impressive performance under wide-temperature conditions (- 35 to 65 °C). The theoretical calculations combined with experimental characterization interprets that the unsaturated coordin

SUBMITTER: Li T 

PROVIDER: S-EPMC12307863 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature