Figure 14
From: Hollow Nanostructured Anode Materials for Li-Ion Batteries
a Schematic illustration of the evolvement process of Si porous nanocapsules with NH3 as bubble template; b low-magnification SEM image of Si hollow nanocapsules; c high-magnification SEM image of a typical broken Si hollow nanocapsules; d TEM image of Si hollow nanocapsules [53]. Copyright Wiley–VCH Verlag Gmbh & Co. KGaA. Reproduced with permission