fig8

Figure 8. (A) The transition of nanowire (α-MnO₂) to nanoparticle (MO-Vo). Reprinted with permission^[122]. Copyright 2022, American Chemical Society; (B) Schematic drawing for fabricating the different MnO₂ samples. Reprinted with permission^[123]. Copyright 2022, John Wiley and Sons; (C) Pristine MnO₂ and Al-intercalated MnO₂. Reprinted with permission^[124]. Copyright 2021, Elsevier; (D) Fabrication process of the MnO₂@CC and MnO_2-x@CC. Reprinted with permission^[125]. Copyright 2021, American Chemical Society; (E) Schematic mechanism for the formation of hierarchical spheres with interlaced nanosheets via the F-doping of β-MnO₂. Reprinted with permission^[126]. Royal Society of Chemistry.