The electrocatalytic oxidation of small organic compounds such as methanol or formic acid has been the subject numerous investigations in last decades. motivation for these studies is often their use fuel so-called direct cells, promising alternatives to hydrogen-fueled proton exchange membrane cells. fundamental research spans from screening identify best performing catalyst materials detailed...

4,5-Dicyano-1H-[1,2,3]-Triazole (DCTz) exhibits a very low proton affinity. This makes it a possible water replacement for proton transport in high temperature polymer electrolyte membranes. A detailed investigation is carried out to define various physical properties as well as the proton transfer characteristics of DCTz. Thermogravimetric analysis showed that DCTz as well as DCTz salts are th...

F uel cells have tantalized engineers for more than a century as efficient devices to directly convert chemical energy to electrical energy. However, fuel cell use has been limited to niche applications, like space vehicles and emergency backup power systems, due to their expensive components and specialized fuel requirements. During the past two decades polymer electrolyte membrane (PEM) fuel ...

The dependency of the Nernst potential in an operating proton exchange membrane fuel cell (PEMFC) on temperature, inlet pressure and relative humidity (RH) is examined, highlighting synergistic dependence measured open circuit (OCP) all three parameters. An alternative model equation derived to more appropriately represent PEMFC system where reactant concentration instead considered as activity...

Hydrogen production via water electrolysis with renewable electricity as input will be crucial for the coming defossilized energy age. Herein, we report an anion exchange membrane electrolyzer using Fe-doped Ni hydroxide anode catalyst that is on par proton electrolyzers in terms of performance, 2 A cm–2 at 2.046 V and 50 °C. We found Fe doping stabilizes ?-Ni(OH)2 phase, which key to ensure fa...

Development of heterogeneous catalysts for energy conversion has been required to solve environmental issues arising from the combustion fossil fuels. Polymer electrolyte fuel cells (PEFC) are promising power generation devices alternative internal engine. PEFC performance is strongly dependent on catalytic activity oxygen reduction reaction at cathode because sluggish kinetics. Thus, highly ac...

Currently, spray coating has attracted interest in the mass production of anode catalyst layers for proton exchange membrane water electrolysis (PEMWE). The solvent ink is a critical factor dispersion ink, microstructure layer, and PEMWE performance. Herein, various pure organic solvents were examined as substitute conventional isopropanol-deionized (IPA-DIW) mixture solvent. Among polar that e...

The oxygen evolution reaction (OER) is the efficiency-determining half-reaction process of high-demand, electricity-driven water splitting due to its sluggish four-electron transfer reaction. Tremendous effects on developing OER catalysts with high activity and strong acid-tolerance at oxidation potentials have been made for proton-conducting polymer electrolyte membrane electrolysis (PEMWE), w...

the electrocatalysis of the oxygen reduction reaction (orr) on carbon supportedpt-v (1:1) catalyst in polymer electrolyte fuel cells (pefc) was investigated. atan oxygen pressure of one atm an enhanced electrocatalytic property of pt-v/ccompared with pt/c is revealed. these results indicate the occurrence of adifferent electrocatalytic mechanism for the orr on pt/c and pt-v/c. anincrease of mas...