writer：X Han, GP Liu, WQ Kong, WR Li, F Ilyas, HY Zhu, WH Yu, S Liu, ZS Wen*
keywords：Composites, Lithium-ion batteries, AnodeTwo-dimensional material, Molybdenum diselenide
source：期刊
specific source：Ceramics International
Issue time：2023年

The traditional MoSe2 anode material for lithium-ion batteries has poor cyclic stability and relatively low capacity, which hinders its practical application. Herein, high capacity of Si and Se are exploratively incorporated into two-dimensional MoSe2 nanopetals to configure Se@MoSe2/Si composite. The optimized Se@MoSe2/Si composites have both high capacity and good electrochemical stability with a high retention capacity of 1187.7 mAh/g after 200 cycles at 100 mA/g current density. The visible depression on volumetric expansion is observed on the configuration of Se@MoSe2/Si. The admirable function of silicon on the enhancement of the electrochemical activity and the conductivity of Se@MoSe2 is theoretically demonstrated by First-principles calculations. This mutually beneficial interaction between the components demonstrates a promising synergistic effect on Se@MoSe2/Si.

https://doi.org/10.1016/j.ceramint.2023.11.129

https://authors.elsevier.com/a/1i828_6D6KjyTX