Integrating platinum-based recombination catalysts into proton exchange membrane water electrolysis systems effectively reduces the anodic hydrogen content. We studied effect of platinum loading an interlayer close to anode within on in oxygen For investigated Pt-loadings between 1 μg Pt cm −2 and 140 , results revealed that for a 110 μm membrane, 7 were sufficient allow safe operation at catho...

We have developed a highly active nanostructured iridium catalyst for anodes of proton exchange membrane (PEM) electrolysis. Clusters of nanosized crystallites are obtained by reducing surfactant-stabilized IrCl3 in water-free conditions. The catalyst shows a five-fold higher activity towards oxygen evolution reaction (OER) than commercial Ir-black. The improved kinetics of the catalyst are ref...

The characterization of performance and losses proton exchange membrane (PEM) anion (AEM) electrolysis cells is typically carried out by electrochemical impedance spectroscopy polarization curve measurements. With these common methods, lateral inhomogeneities, local degradation, or defects cannot be mapped. Lock-in thermography (LIT) offers the possibility mapping current flows electrical losse...

The chemical analysis of processes inside fuel cells under operating conditions in either direct or inverted (electrolysis) mode and their correlation with potentiostatic measurements is a crucial part of understanding fuel cell electrochemistry. We present a relatively simple yet powerful experimental setup for online monitoring of the fuel cell exhaust (of either cathode or anode side) downst...

The basic principles of work of proton exchange membrane fuel cell (PEMFC) are presented. The real experiments with PEMFC are made. Current – voltage characteristic in electrolyses, voltage, current and power characteristics of PEMFC are given. The efficiencies at different operating modes are made. The final conclusion about characteristics and efficiency of PEMFC are derived.

Hydrogen production via electrochemical water splitting is a promising approach for storing solar energy. For this technology to be economically competitive, it is critical to develop water splitting systems with high solar-to-hydrogen (STH) efficiencies. Here we report a photovoltaic-electrolysis system with the highest STH efficiency for any water splitting technology to date, to the best of ...