Figure 3
From: Hollow Nanostructured Anode Materials for Li-Ion Batteries
a Schematics of formation of SnO2/C coaxial hollow nanospheres; b, c SEM images of SnO2/C coaxial hollow nanospheres; d, e TEM images of SnO2/C coaxial hollow nanospheres; f SEM image of double-shelled SnO2 hollow nanospheres; g TEM image of double-shelled SnO2 hollow nanospheres [38]. Copyright Wiley–VCH Verlag Gmbh & Co. KGaA. Reproduced with permission