Facile synthesis of magnetic Fe3S4 nanosheets and their application in lithium-ion storage

•We have developed a facile approach to synthesize the Fe3S4 nanosheets.•The products show large specific surface area and ferromagnetic behavior.•The Fe3S4 nanosheets exhibit superior electrochemical performances.

Transition metal chalcogenides have attracted much attention owing to their unique properties and various potential applications. However, it is rather challenging to explore a facile and versatile strategy to synthesis of Fe3S4 nanosheets. In this paper, we have developed an easy and controllable method to prepare large-scale Fe3S4 nanosheets, which have unique morphology, large specific surface area, and ferromagnetic behavior. The growth process of Fe3S4 nanosheets has been investigated based on the results of time-dependent experiments. When they were employed as anode materials for lithium-ion batteries, the Fe3S4 nanosheets can deliver stably reversible capacity of 548 mA h g−1 after 120 cycles at a current density of 0.2 A g−1 and superior rate performance.

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