Fig. 1From: Facile Synthesis of Porous Silicon Nanofibers by Magnesium Reduction for Application in Lithium Ion BatteriesOverall fabrication scheme of porous graphene-coated Si NFs: SEM images (a–d) and TEM image (e) of the fabricated NFs at each step (the scale bars of (a), (b–d), and (e) represent 10, 1, and 100 nm, respectively. TEM images of insets (b–c) and (d) have the scale bars of 100 and 200 nm)Back to article page