Joule-heating synthesis of high-entropy oxides as efficient catalysts for electrochemical methanol oxidation.

Ultrafast Joule heating enables the synthesis of high-entropy oxides for efficient methanol oxidation electrocatalysis. The MnFeCoNiCr-1600K catalyst exhibits reduced anodic potential and enhanced kinetics. Operando studies reveal methanol-induced surface reconstruction and structured interfacial water, enabling advanced methanol oxidation performance.