Fig. 11
From: Progress in Iron Oxides Based Nanostructures for Applications in Energy Storage
Reprinted with Permission from [3]. Copyright, Elsevier B.V
The charge/discharge curve of Fe3O4/RGO composites (a) and mechanically mixed Fe3O4/RGO composites (M-Fe3O4/RGO) (b) electrodes at constant current densities of 0.1 A g−1. Cycling performance of Fe3O4/RGO composites and M-Fe3O4/RGO composites electrode at constant current densities of 0.1 A g−1 (c). Rate capability of Fe3O4/RGO composites and physically mixed Fe3O4/RGO composites at the current densities between 0.1 A g−1 and 2.4 A g−1 (d). Nyquist plots of the electrodes of Fe3O4/RGO sheet and mechanically mixed Fe3O4/RGO composites. All of the measurements were conducted using a voltage window of 0.01–3.0 V (e). Schematic representation of the electrochemical reaction path on the Fe3O4/RGO composites (f).