LAUSR

Abstract The fabrication of uniform amorphous silicon (a-Si) nanoshell on graphite is recognized as a high energy technique for building block into macroscopic materials. Here in, various thick containing nanoscaled A-Si nanoshells could easily be adjusted by controlling the preparation conditions. In this structure, A-Si nanoshell thickness with up to 24 nm are uniformly coated and supported on anode composite. The resulting AG@a-Si-90min composites (a-Si shell thickness ≈ 15 nm) exhibited better cycle reversibility and stability than among samples. The G@a-Si-90 sample delivered a relatively stable specific capacity of ca. 384 mAh.g-1 at 1.3 A g−1 (1C: 650 mAh.g-1) for 200 cycles. Furthermore, the designed A-Si shell by CVD can also be applied to the study of the synergetic properties of great importance for the large-scale production for batteries and other devices.