Figure 4
From: Beads-Milling of Waste Si Sawdust into High-Performance Nanoflakes for Lithium-Ion Batteries

The relationship between the initial structures of Si (a–c) and the corresponding ones after 100 charge/discharge cycles (d–f) under a capacity restriction of 1500 mAh g−1. In (a–c), D, L, and Dsec are particle diameter (a,b) or flake thickness (c), a length of a continuous structure, and the size of secondary aggregation estimated by the laser diffraction, respectively. (d–f) are TEM images of Si(CVD), Si(sd)-ba(w), and Si(sd)-be(ipa), respectively, after 100 charge/discharge cycles. Insets represent their structures: wrinkled structure (d,f) and aggregated lump (e).