Highly porous self-assembled nanostructured ni@c and nio@c were synthesized via calcination of a ni-based metal-organic framework. the morphology, structure, and composition of as synthesized ni@c and nio@c were characterized by SeM, fiB-SeM, teM, and XRD. the electro-catalytic activity of the ni@c and nio@c catalysts towards urea oxidation was investigated using cyclic voltammetry. It was found that the Ni@C had a higher residual carbon content and a higher specific surface area than nio@c, thus exhibiting an enhanced electrochemical performance for urea oxidation. A direct urea fuel cell with Ni@C as an anode catalyst featured an excellent maximum power density of 13.8 mW cm −2 with 0.33 M urea solution in 1 M KOH as fuel and humidified air as oxidant at 50 °C, additionally showing excellent stability during continuous 20-h operation. Thus, this work showed that the highly porous carbon-supported ni catalysts derived from ni-based metal-organic framework can be used for urea oxidation and as an efficient anode material for urea fuel cells.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.