fig12

Figure 12. (A) SEM and images of materials: (A-1) SEM image of Ni/α-MnO₂-SF, (A-2 and A-3) TEM images of Ni/α-MnO₂-HT, (A-4) SEM image of α-MnO₂-SF, and (A-5 and A-6) TEM images of α-MnO₂-HT; (B) LSV curves studied on RDE electrodes in O₂-saturated 0.1 M KOH solution, at a rotation rate of 1,600 rpm with a scan rate of 5 mV·s^-1; (C) Nyquist plots obtained from EIS measurements in O₂-saturated 0.1 M KOH solution on the manganese oxide modified PG carbon electrodes at an anodic polarization potential of 0.65 V (1.66 Vvs. RHE). Reproduced with permission. Copyright 2014, ACS Publications^[173]; (D) Morphology and microstructure characteristics of Actiniae-25 and Actiniae-65: (D-1 and D-2) SEM images of Actiniae-65, (D-3) TEM image of Actiniae-65, (D-4) HRTEM image of Actiniae-65, (D-5) SEM image of Actiniae-25, and (D-6) TEM image of Actiniae-25; (E) Schematic illustration of the solvothermal quasi-reverse-emulsion induced fabrication of actiniae-like hierarchical Fe₃O₄/Co₃O₄ nanoheterojunctions. Reproduced with permission. Copyright 2020, Elsevier^[181].