Effects of Alumina Films on N-Doped Carbon Nanotubes/Graphene Composites as Anode Materials of Lithium-Ion Batteries

<div>Cyclic voltammograms (between 0.01 V and 3 V from the 1st cycle to the 3rd cycle) of the coin cell for (a) the N-doped CNTs/graphene composite and (b) Al<sub>2</sub>O<sub>3</sub>/N-doped CNTs/graphene (the best sputtering condition).</div>

Journal of Nanomaterials

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Figure 10

Figure 10: Effects of Alumina Films on N-Doped Carbon Nanotubes/Graphene Composites as Anode Materials of Lithium-Ion Batteries 