Abstract
Fe5C2 particle is a promising magnetic material, but there are few reports on pure phase Fe5C2 particle with adjustable morphology. Herein, pure phase Fe5C2 magnetic materials with different morphologies were prepared by a simple ethylenediamine carbonization method. This method included the preparation of FeC2O4·2H2O precursors with different morphologies and the co-calcination process of ethylenediamine and the precursors. At the same time, the optimum experimental conditions for the formation of pure phase Fe5C2 particles with different morphologies were investigated. More importantly, the magnetic properties of Fe5C2 particles and the electrocatalytic activities of Fe5C2 particles as electrocatalysts for the hydrogen evolution reaction (HER) are improved by adjusting the morphologies of Fe5C2 particles. The saturation magnetization (Ms) and coercivity (Hc) of Fe5C2 particle with the cuboid rod-like structure can reach 134.53 emu/g and 305.93 Oe, respectively, demonstrating good soft magnetic properties at 298 K. Simultaneously, the Fe5C2 particle with the porous cuboid rod-like structure exhibits efficient HER activity (225 mV for j = − 10 mA cm−2). In this work, a simple and generalized Fe5C2 particle synthesis method is proposed, and new explorations are provided for the further applications of Fe5C2 particles with different morphologies in the fields of magnetism and catalysis.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (CN) (No. 51872111) and Natural Science Foundation of Jilin Province (No.20190201253JC).
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Kong, F., Qie, Y., Liu, Y. et al. Magnetic properties and electrocatalytic properties of Fe5C2 particles with different morphologies. J Mater Sci: Mater Electron 33, 884–893 (2022). https://doi.org/10.1007/s10854-021-07358-4
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DOI: https://doi.org/10.1007/s10854-021-07358-4