Cu3Si@Si core-shell nanoparticles synthesized using a solid-state reaction and their performance as anode materials for lithium ion batteries.
Cu3Si@Si core-shell nanoparticles with a Si shell coated over the Cu3Si core are synthesized by a solid-state reaction between CuCl and Si. The evaluation process of the core-shell structure shows a mechanism analogous to the Kirkendall effect. As anode materials for lithium ion batteries, Cu3Si@Si core-shell nanoparticles retained a capacity of 903.6 mA h g(-1) at the current density of 2 A g(-1) over 400 cycles.
Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, 230026, P.R. China. ychzhu@ustc.edu.cn ytqian@ustc.edu.cn.
Jianbin
J
Zhou
Ning
N
Lin
Ying
Y
Han
Jie
J
Zhou
Yongchun
Y
Zhu
Jin
J
Du
Yitai
Y
Qian