Fig. 3: Electron micrographs of IrO₂@TaB₂.

a The TEM image of IrO₂@TaB₂. b The elemental mapping images of IrO₂@TaB₂. c, d The side view and top view of aberration-corrected HAADF-STEM images of IrO₂@TaB₂. e High-resolution HAADF-STEM image of IrO₂@TaB₂. f Schematic illustration of microstructure of IrO₂@TaB₂.