Table 3. Summary of novel HEMs for thermocatalysis and electrocatalysis.
T, thermocatalysis; E, electrocatalysis.
| Material | Structure | Synthetic method | Catalytic reaction | Ref. |
| KNa(MgMnFeCoNi)F3 | Perovskite | Ball milling + solvothermal synthesis |
OER (E) | (38) |
| [La(CrMnFeCoNi)O3]3/4 [K(MgMnFeCoNi)F3]1/4 |
Perovskite | Ball milling | OER (E) | (131) |
| CrMnFeCoNiSx | Mainly cubic | Carbothermal shock | OER (E) | (39) |
| CoCrFeMnNiPx | Hexagonal | Eutectic synthesis | OER (E) and HER (E) | (133) |
| ZnCoCdNiCu/MIM | ZIF | Ball milling | Cycloaddition of CO2 with epoxides (T) |
(134) |
| MnFeCoNiCu/BDC | MOF | Ambient solution-phase method |
OER (E) | (135) |