采用SEM观察目标催化剂Ir-Fe3O4/IF-400-2形貌特征，从

SEM was used to observe the morphological characteristics of the target catalyst Ir-Fe3O4/IF-400-2. From Figure 4.3 a and b, it can be seen that the surface of Ir-Fe3O4/IF-400-2 has a rich intersecting "leaf-shaped" array structure. It not only ensures a good contact between the electrolyte and the electrocatalyst, but also facilitates the exposure of the active center and ensures the rapid transmission of the reacting substance and the resulting substance.

Using SEM observation target catalyst Ir-Fe3O4/IF-400-2 morphological characteristics, it can be seen from Figure 4.3 a, b that the surface of Ir-Fe3O4/IF-400-2 has a rich cross-over "leaf-shaped" array structure, which not only ensures good contact between electrolytes and electrocatalysts, but also facilitates exposure to active centers and ensures the rapid transmission of reactive substances and producing substances.

SEM was used to observe the morphology of ir-fe3o4 / if-400-2. It can be seen from Fig. 4.3 A and B that the surface of ir-fe3o4 / if-400-2 has abundant intersecting "leaf" array structure, which not only ensures the good contact between electrolyte and electrocatalyst, but also helps to expose the active center and ensure the rapid transport of reactants and products.<br>