Anion-exchange membrane fuel cells offer the prospect of low-cost components thanks to their alkaline environment, yet they are plagued by carbonation electrolyte caused CO2 present in feed air. Now, an electrochemical method for scrubbing using a with mixed ionic–electronic conductivity offers potential remedy.

A novel two-step Isotopic Exchange (IE) technique has been developed to investigate the influence of oxygen containing components of ambient air (such as H2O and CO2) on the effective surface exchange coefficient (k*) of a common mixed ionic electronic conductor material. The two step 'back-exchange' technique was used to introduce a tracer diffusion profile, which was subsequently measured usi...

the dependence on ionic strength of protonation of l-aspartic acid and its complexation withdioxouranium(vi) is reported in sodium perchlorate solution as a background salt. the measurementshave been performed at 25 ± 0.1 °c and various ionic strengths in the range 0.1 to 1.0 mol dm-3, using acombination of potentiometric and spectrophotometric techniques. the overall analysis of the present an...

The noncollinear cycloidal magnetic order breaks the inversion symmetry in CaMn7O12, generating one of the largest spin-orbit driven ferroelectric polarizations measured to date. In this Letter, the microscopic origin of the polarization, including its direction, charge density redistribution, magnetic exchange interactions, and its coupling to the spin helicity, is explored via first principle...

An uptake of zinc (Zn), copper (Cu), and lead (Pb) from aqueous solutions by ion exchange on natural zeolitic tuff has been studied. The Croatian zeolite clinoptilolite from the Donje Jesenje deposit has been used as a natural ion exchanger. The efficiency of removal is higher for Pb and Cu than for Zn ions. Measured concentrations of Si in the liquid phase identify the detachment of the alumin...

We consider the electronic structure of, and magnetic exchange spin interactions between, nominally nonmagnetic Eu3+ ions 4f6, S=3, L=3, J=0 within the context of the rocksalt structure compounds EuN and EuP. Both compounds are ionic Eu3+; N3− and P3− semimetals similar to isovalent GdN. Treating the spin polarization within the 4f shell, and then averaging consistent with the J=0 configuration...

Anion exchange membrane (AEM) electrolysis aims to combine the benefits of alkaline electrolysis, such as stability cheap catalyst and advantages proton-exchange systems, like ability operate at differential pressure, fast dynamic response, low energy losses, higher current density. However, today, AEM is limited by AEMs exhibiting insufficient ionic conductivity well lower activity stability. ...

Magneto-ionic control of magnetic properties through ionic migration has shown promise in enabling new functionalities energy-efficient spintronic devices. In this work, we demonstrate the effect helium ion irradiation and oxygen implantation on magneto-ionically induced exchange bias Gd/Ni$_{0.33}$Co$_{0.67}$O heterostructures. Irradiation using $He^+$ leads to an expansion Ni$_{0.33}$Co$_{0.6...

The electrophysiological effects of the benzothiazepine 7-chloro-3,5-dihydro-5-phenyl-1H-4,1-benzothiazepine-2-one (CGP-37157) (CGP) were investigated on the canine (NCX1.1) and Drosophila (CALX1.1) plasmalemmal Na+-Ca2+ exchangers. These exchangers were selected for study because they show opposite responses to cytoplasmic regulatory Ca2+, thereby allowing us to examine the role of this regula...