Interfacial engineering of gallium indium phosphide photoelectrodes for hydrogen evolution with precious metal and non-precious metal based catalysts

Investigations into the Direct Synthesis of Hydrogen Peroxide and CO Oxidation Using Precious Metal Catalysts

Highly porous non-precious bimetallic electrocatalysts for efficient hydrogen evolution

A robust and efficient non-precious metal catalyst for hydrogen evolution reaction is one of the key components for carbon dioxide-free hydrogen production. Here we report that a hierarchical nanoporous copper-titanium bimetallic electrocatalyst is able to produce hydrogen from water under a mild overpotential at more than twice the rate of state-of-the-art carbon-supported platinum catalyst. A...

Quantifying the density and utilization of active sites in non-precious metal oxygen electroreduction catalysts

Carbon materials doped with transition metal and nitrogen are highly active, non-precious metal catalysts for the electrochemical conversion of molecular oxygen in fuel cells, metal air batteries, and electrolytic processes. However, accurate measurement of their intrinsic turn-over frequency and active-site density based on metal centres in bulk and surface has remained difficult to date, whic...

Non-Precious Metal Catalysts for Oxygen Reduction in PEM Fuel Cells

Metal-free carbon-based catalysts for oxygen reduction is synthesized with high activity selectivity and durability. The catalysts were synthesized by introducing oxygen and nitrogen groups from various oxygen and nitrogen precursors. The nature of nitrogen surface groups and the effect of pyrolysis temperature on the activity of the catalyst have been evaluated. XPS indicates that higher conce...

Identification of carbon-encapsulated iron nanoparticles as active species in non-precious metal oxygen reduction catalysts

The widespread use of fuel cells is currently limited by the lack of efficient and cost-effective catalysts for the oxygen reduction reaction. Iron-based non-precious metal catalysts exhibit promising activity and stability, as an alternative to state-of-the-art platinum catalysts. However, the identity of the active species in non-precious metal catalysts remains elusive, impeding the developm...