Figure 1. Schematic drawings of the Si anode preparation process and an in situ SEM observation cell.
(a–c) SEM images of the Si active materials used in this study. The active materials were (a) Si microparticles, (b) Si nanoparticle aggregates, and (c) Si thin flakes. (d) Binder-free Si anode fabrication process via the electrophoretic deposition (EPD) method. Here, Si thin flakes were employed as the Si active material. (e) Illustration of a typical Li-ion battery system with a binder-free Si thin flake anode for in situ SEM.
