Surficial-enriched Ru on octahedral CeO2 with strong electronic interactions as an efficient electrocatalyst for hydrogen generation in alkaline freshwater/seawater

Surficial-enriched Ru was developed on octahedral CeO 2 through a combination of hydrothermal synthesis and ultrafast (60 s) wet impregnation approaches, with the assistance of H 2 O 2 , which has superior electrocatalytic performance.