Silicon-Encapsulated Hollow Carbon Nanofiber Networks as Binder-Free Anodes for Lithium Ion Battery
Figure 1
(a) Schematic illustration of the formation of the hollow Si/C nanofiber networks; (b) SEM image of Si/PVA nanofibers; (c) a macrograph of the Si/PVA-Resol composites after solidification and hollow Si/C composites (inset is SEM image of Si/PVA-Resol-3). ① is Si/PVA-Resol-1, ② is Si/PVA-Resol-3, ③ is Si/PVA-Resol-5, ④ is Si/PVA-Resol-10, and ⑤ is H-Si/C-3; (d) SEM image of H-Si/C-3; (e) Raman spectrum of the Si/PVA nanofibers; (f) XRD patterns of Si/PVA nanofibers and hollow Si/C composites.
