Abstract
Spinel iron-based chalcogenides of Fe3O4 and Fe3S4 are successfully synthesized via a MOF-based calcination and facile one-step hydrothermal method, respectively, and their electrochemical performance as cathode catalysts of Li-O2 battery is comparatively investigated. The results reveal that the battery with Fe3S4 has better performance including higher discharge capacity and voltage, lower overpotential, higher energy conversion efficiency and longer lifespan. The performance difference of Fe3O4 and Fe3S4 is analyzed and discussed with cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and density functional theory (DFT) calculations.
Funder
National Natural Science Foundation of China
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
9 articles.
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