| Summary: | Silicon is investigated as one of the most prospective anode materials for next generation lithium ion batteries due to its superior theoretical capacity (3580 mAh g<sup>−1</sup>), but its commercial application is hindered by its inferior dynamic property and poor cyclic performance. Herein, we presented a facile method for preparing silicon/tin@graphite-amorphous carbon (Si/Sn@G–C) composite through hydrolyzing of SnCl<sub>2</sub> on etched Fe–Si alloys, followed by ball milling mixture and carbon pyrolysis reduction processes. Structural characterization indicates that the nano-Sn decorated porous Si particles are coated by graphite and amorphous carbon. The addition of nano-Sn and carbonaceous materials can effectively improve the dynamic performance and the structure stability of the composite. As a result, it exhibits an initial columbic efficiency of 79% and a stable specific capacity of 825.5 mAh g<sup>−1</sup> after 300 cycles at a current density of 1 A g<sup>−1</sup>. Besides, the Si/Sn@G–C composite exerts enhanced rate performance with 445 mAh g<sup>−1</sup> retention at 5 A g<sup>−1</sup>. This work provides an approach to improve the electrochemical performance of Si anode materials through reasonable compositing with elements from the same family.
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