Characteristics and Electrochemical Performance of Hydroxyl-Functionalized Graphene Quantum Dot-Coated Si Nanoparticles/Reduced Graphene Hybrid Anodes for Advanced Li-Ion Batteries

Figure 4

SEM images of 0.2OH-GQD@Si/0.2rGO-1 (a–c) and 0.3OH-GQD@Si/0.1rGO-2 (d–f) at different magnifications.

(a)

(b)

(c)

(d)

(e)

(f)