Ultrathin Carbon Shell Protecting Copper Sites to Boost Anodic Hydrogen Production via Low-Potential Formaldehyde Oxidation.

The oxidation of aldehydes on a copper-based electrocatalyst within a small potential window can produce hydrogen at the anode, thus offering a bipolar hydrogen production system. However, the inherent activity and stability of Cu-based electrocatalysts for aldehyde oxidation are still not satisfactory in practical application. Herein, by coating an ultrathin carbon shell on the copper sphere, an effective and stable formaldehyde oxidation reaction (FOR) can be realized to produce H at a very low potential.

Bifunctional Al-Doped Cobalt Ferrocyanide Nanocube Array for Energy-Saving Hydrogen Production via Urea Electrolysis.

The very slow anodic oxygen evolution reaction (OER) greatly limits the development of large-scale hydrogen production via water electrolysis. By replacing OER with an easier urea oxidation reaction (UOR), developing an HER/UOR coupling electrolysis system for hydrogen production could save a significant amount of energy and money. An Al-doped cobalt ferrocyanide (Al-CoFe(CN)) nanocube array was in situ grown on nickel foam (Al-CoFe(CN)/NF).

Al-Doped Octahedral CuO Nanocrystal for Electrocatalytic CO Reduction to Produce Ethylene.

Ethylene is an ideal CO product in an electrocatalytic CO reduction reaction (CORR) with high economic value. This paper synthesised Al-doped octahedral CuO (Al-CuO) nanocrystal by a simple wet chemical method. The selectivity of CORR products was improved by doping Al onto the surface of octahedral CuO.