Abstract: In order to improve the specific capacity and prolong safety life of lithium-ion batteries, three-dimensional large-frame FeSe2 composite materials were prepared by chemical blow molding and sintering selenization. The prepared materials were characterized by X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and X-ray energy spectroscopy (EDS). The results show that the FeSe2 material exhibits a stable three-dimensional large-frame honeycomb structure with the elements evenly distributed. Cyclic voltammetry (CV) and galvanostatic charge-discharge test were used to analyze the lithium storage performance of the prepared material as the anode electrode of lithium-ion battery. The results show that the specific capacity of lithium-ion battery can reach 827.9 mAh/g at the second round at the current density of 100 mA/g. After a long cycle of 1 000 cycles at the current density of 500 mA/g, the specific capacity increases by 30.35% compared to the second cycle, the battery showing higher specific capacity and longer cycle life.
胡思思, 刘倩, 李文, 王波. 三维大骨架结构FeSe2材料的制备及储锂机理研究[J]. 材料导报, 2022, 36(8): 21010183-5.
HU Sisi, LIU Qian, LI Wen, WANG Bo. Preparation of FeSe2 Material with Three-dimensional Large Framework Structure and Study on Its Lithium Storage Mechanism. Materials Reports, 2022, 36(8): 21010183-5.
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