Fig. 12
From: Progress in Iron Oxides Based Nanostructures for Applications in Energy Storage
Reprinted with Permission from [12], Copyright, Elsevier Ltd
a CVs of the HPHNF during the first three cycles at 0.2 mV s−1, b Galvanostatic charge/discharge profiles of the HPHNF electrodes for the 1st, 50th, 100th, 150th and 200th cycle at a specific current of 200 mA g−1. c Cycling performance of the HPHNF nanocomposites, N-doped Fe3O4/C nanocomposites and graphite at a specific current of 200 mA g−1. d Coulombic efficiency of HPHNF.