fig3

Figure 3. (A) Schematic illustration of the preparation of Fe₃O₄@C@G. (B) SEM, (C) TEM, and (D) HRTEM images of Fe₃O₄@C@G. (E) CV curves of Fe₃O₄@C@G; (F) Comparison of the cycling performance of Fe₃O₄, Fe₃O₄@C, and Fe₃O₄@C@G at 0.1 A g^-1[27]. Copyright 2020, Elsevier.