B-Doped Si@C Nanorod Anodes for High-Performance Lithium-Ion Batteries

Figure 6

Electrochemical performances of sample: (a) volt-ampere characteristic curve; (b) discharge/charge behaviors of Si@C and B-Si@C; (c) capacity of B-Si@C, Si@C, and Si after 500 cycles; (d) rate capability behaviors of the B-Si@C composite electrode at current density from 100 to 4000 mAg^-1; (e) impedance spectra of B-Si@C and Si.

(a)

(b)

(c)

(d)

(e)