3D-Zipped Interface: In Situ Covalent-Locking for High Performance of Anion Exchange Membrane Fuel Cells.

Polymer electrolyte membrane fuel cells can generate high power using a potentially green fuel (H ) and zero emissions of greenhouse gas (CO ). However, significant mass transport resistances in the interface region of the membrane electrode assemblies (MEAs), between the membrane and the catalyst layers remains a barrier to achieving MEAs with high power densities and long-term stabilities. Here, a 3D-interfacial zipping concept is presented to overcome this challenge.

The alkali degradation of LDPE-based radiation-grafted anion-exchange membranes studied using different e methods.

Radiation-grafted anion-exchange membranes (RG-AEM) in alkaline membrane fuel cells (AEMFC) exhibit promising performances (low resistances, high power outputs and reasonably high alkali stabilities). Much research is focused on developing AEMs with enhanced chemical stabilities in the OH-forms at temperatures >60 °C. This study contributes towards this effort by providing a comparison of three different methods of screening alkali stabilities (where different laboratories conducted experiments on exactly the same batches of RG-AEM).

Calix[4]arene urea derivatives: The pathway from fundamental studies to the selective removal of fluorides and phosphates from water.

Wet processes of phosphoric acids produce untreated wastewater containing large amounts of fluoride leading to serious environmental problems. This paper reports fundamental studies on two lower rim functionalised calix[4]arene based receptors namely 5, 11, 17, 23 tetra-tert-butyl, 25, 27 bis [diethylphenylurea]ethoxy, 26, 28 dihydroxycalix[4]arene, 1 and 25, 27 bis[diethylphenylurea]ethoxy, 26, 28 dihydroxycalix[4]arene, 2 and their ionic interactions. It is shown that these receptors only interact with fluoride and phosphate in acetonitrile.