Ultrahigh pressure-induced modification of morphology and performance of MOF-derived Cu@C electrocatalysts.

ABSTRACT: We report the pyrolysis of copper-containing metal-organic frameworks under high pressure and the effect of the applied pressure on the morphology and electrocatalytic performance toward the oxygen-related reactions of the products. The high-pressure and high-temperature (HPHT) syntheses were performed under 5, 2.5, 1, and 0.5 GPa, and the Cu@C products were obtained except for the 2.5 GPa experiment. Copper formed a shell-like nanostructure on the carbon matrices during the 0.5 GPa experiment, whereas copper formed sub-nanometer sized particles in the carbon matrices with the increasing pressure. It is considered that the transportation of copper atoms by outgassing during the pyrolysis affects the morphology. Electrochemical measurements revealed that all samples exhibited activity for t

SUBMITTER: Yamane I 

PROVIDER: S-EPMC9846442 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature