Fig. 4: Structure evolution of the Li21Si5/Si–Li21Si5 anode during cycling.
From: Silicon-based all-solid-state batteries operating free from external pressure

In-situ TEM observation of Si particle (a1–a5) and Li–Si@Si (b1–b5) particle during lithiation. Modeling and stress distribution of Si particle (c) and Li–Si@Si (d) particle during lithiation. HRTEM and selected area electron diffraction patterns of the Li21Si5 particle before e–g and after h, j cycling.