Impact of Pendent Ammonium Groups on Solubility and Cycling Charge Carrier Performance in Nonaqueous Redox Flow Batteries.

The synthesis, characterization, electrochemical performance, and theoretical modeling of two base-metal charge carrier complexes incorporating a pendent quaternary ammonium group, [Ni(bppn-Me)][BF], , and [Fe(PyTRENMe)][OTf], , are described. Both complexes were produced in high yield and fully characterized using NMR, IR, and UV-vis spectroscopies as well as elemental analysis and single-crystal X-ray crystallography. The solubility of in acetonitrile showed a 283% improvement over its neutral precursor, whereas the solubility of complex ' was effectively unchanged.

Enhancement of the Green H Production by Using TiO Composite Polybenzimidazole Membranes.

This study reports the hydrogen production using TiO based composite polybenzimidazole membranes through the SO depolarized electrolysis that requires lower energy input than the direct water electrolysis. Composite membranes prepared and studied in this work showed very promising results in terms of proton conductivity, chemical stability, and crossover. Thus, a reduction in SO crossover was observed with the increase of the concentration of TiO, obtaining reductions as high as 42% with the 3.

Electrospray Deposition of Catalyst Layers with Ultralow Pt Loading for Cost-Effective H Production by SO Electrolysis.

The hybrid sulfur (HyS) thermochemical cycle has been considered as a promising approach for the massive production of clean hydrogen without CO emissions. The key to advance this technology and to enhance the cycle efficiency is to improve the electrocatalytic oxidation of SO, which is the pivotal reaction within this process. Hence, this paper investigates, for the first time, the effect of electrospray and air gun deposition techniques and the influence of very low Pt loadings (<0.

Characterization of PBI/Graphene Oxide Composite Membranes for the SO Depolarized Electrolysis at High Temperature.

In this work, polybenzimidazole (PBI) membranes with different graphene oxide (GO) contents (0.5, 1.0, 2.