fig4

Figure 4. Verification of the LOM pathway and interface changes of Mo/F-NiFe₂O₄. DEMS of (A) Mo/F-NiFe₂O₄ and (B) NiFe₂O₄; (C) Raman spectra ; (D) High-resolution XPS O 1s spectra; (E) Relative content of the different oxygen species of the Mo/F-NiFe₂O₄ before and after stability test; In-situ impedance testing diagram with corresponding relaxation time distribution diagram of (F) NiFe₂O₄, (G) Mo-NiFe₂O₄, (H) F-NiFe₂O₄ and (I) Mo/F-NiFe₂O₄.