Table 1. Summary of HEAs for thermocatalysis and electrocatalysis.
AO, alcohol oxidation; T, thermocatalysis; E, electrocatalysis.
| Material | Structure | Synthetic method | Catalytic reaction | Ref. |
| PtPdRhRuCe | fcc | Carbothermal shock | NH3 oxidation (T) | (29) |
| RuRhCoNi and RuRhCoNiIr | fcc | Carbothermal shock | NH3 decomposition (T) | (64) |
| CoMoFeNiCu | fcc | Carbothermal shock | NH3 decomposition (T) | (67) |
| IrPdPtRhRu (calculation) | fcc | DFT + machine learning | ORR (E) | (73) |
| fcc | DFT + machine learning | ORR (E) | (74) | |
| PtPdRhNi and PtPdFeCoNi | fcc | Carbothermal shock | ORR (E) | (75) |
| AgIrPdPtRu | fcc | Sputtering | ORR (E) | (76) |
| PdCuPtNiCo | fcc | Colloidal synthesis + annealing |
ORR (E) | (77) |
| AlCuNiPtMn | fcc | Dealloying | ORR (E) | (78) |
| AlNiCuPtPdAu | fcc | Dealloying | CO oxidation (T), ORR (E), HER (E), and AO (E) |
(79) |
| CrMnFeCoNi | Amorphous | Sputtering | ORR (E) | (80) |
| fcc, bcc, and amorphous | Sputtering | ORR (E) | (81) | |
| fcc (binary) | Laser ablation | ORR (E) | (82) | |
| Amorphous | Sputtering | ORR (E) | (83) | |
| MnFeCoNiCu | fcc | Solvothermal | OER (E) | (84) |
| FeNiMnCrCu and FeCoNiCrAl | fcc + bcc (binary) | Arc melting | OER (E) | (85) |
| CoCrFeMnNi | fcc | Laser ablation | OER (E) | (86) |
| FeCoNiCrNb | Laves phase | Dealloying | OER (E) | (89) |
| AlNiCoIrMo | fcc | Dealloying | OER (E) | (90) |
| AlNiCoFeX (X = Mo, Nb, and Cr) | fcc + spinel (binary) | Dealloying | OER (E) | (91) |
| fcc + spinel (binary) | Dealloying | ORR (E) and OER (E) | (94) | |
| AlPdNiCuMo | fcc | Dealloying | AO (E) | (92) |
| RuIrCeNi and RuIrCeNiWCuCrCo | fcc | Carbothermal shock | ORR (E) and OER (E) | (93) |
| FeCoPdIrPt | fcc | Fast moving bed pyrolysis | HER (E) | (30) |
| PtAuPdRhRu | fcc | Ultrasonication-assisted wet chemistry + annealing |
HER (E) | (95) |
| IrPdPtRhRu | fcc | Polyol method | HER (E) | (97) |
| FeCoNiAlTi | L12-type intermetallics | Dealloying | HER (E) | (98) |
| CuAlNiMoFe | fcc + bcc (binary) | Dealloying | HER (E) | (99) |
| CoFeLaNiPt | Amorphous | Electrodeposition | OER (E) and HER (E) | (100) |
| CoCuGaNiZn and AgAuCuPdPt (calculation) |
fcc | DFT + machine learning | CO2 reduction (E) and CO reduction (E) |
(102) |
| AuAgPtPdCu | fcc | Melting-cryogrinding | CO2 reduction (E) | (103) |
| IrOsPdPtRhRu | fcc | Polyol method | AO (E) | (34) |
| AuPdPt | fcc | Sparking mashup | AO (E) and formic acid oxidation (E) |
(105) |
| PtNiFeCoCu | fcc | Colloidal synthesis | HER (E) and AO (E) | (106) |
| PdFeCoNiCu | bcc | Colloidal synthesis | HER (E) | (107) |
| RuFeCoNiCu | hcp | Colloidal synthesis | Nitrogen reduction (E) | (108) |
| CuAgAuPtPd | fcc | Melting-cryogrinding | AO (E) and formic acid oxidation (E) |
(109) |
| PtFeCoNiCuAg | fcc | Sputtering | AO (E) | (110) |
| fcc | Sputtering | AO (E) | (111) | |
| IrOsReRhRu | hcp | Thermal decomposition | AO (E) | (112) |