| Catalyst | Electrolyte/Methods | Properties |
| Nano dendrites Pt/Ir | 0.5 mol∙dm−3 H2SO4 sat. with O2 | The reasons for the increase in ORR activity compared to Black Pt/Ir were considered: the nanodendric nature of the particles, which led to an increase in the electrochemical surface; and interactions of iridium core with platinum coating. |
| Nano dendrites Pt/Au | 0.1 mol∙dm−3 HClO4 sat. with O2 | Better ORR activity was observed, which probably results from a large electrochemical surface created in nano dendric buildings. |
| Nano dendrites Pt/IrRe | 0.1 mol∙dm−3 HClO4 sat. with O2 | With the change in the composition of IrRe, the binding energy of the -OH catalyst changes, the ORR activity also changes. |
| Pt monolayers (ML) on the Au nanoparticles (NP) | 0.1 mol∙dm−3 HClO4 sat. with O2 | No drastic changes in particle size in PtC and ML Pt/NP Au catalysts |
| Nanospheres Pt/Ir-Ni | 0.1 mol∙dm−3 HClO4 sat. with O2 | Pt coatings with pure Ir core caused too strong binding of -OH molecules. Ni particles added to the core weaken the catalyst binding -OH to Pt/Ir, and strengthen binding to Pt. Higher activity of Pt/IrNi catalysts compared to Pt/C gives higher ORR activity. |
| Nanowire Pt/Pd | 0.1 mol∙dm−3 HClO4 sat. with O2 | High activity of the Pt/Pd catalyst results from the relationship between metals, this does not refer to the degree of development of the active surface |