Optimization of anodic porous transport electrodes for proton exchange membrane water electrolyzers

Abstract

In this study we optimize anodic porous transport electrodes (PTEs) for proton exchange membrane water electrolysis (PEMWE) in terms of the titanium substrate, IrO2 catalyst loading and Nafion content.

On the effect of anion exchange ionomer binders in bipolar electrode membrane interface water electrolysis

“…In our previous study, 10 wt% binder was used in the anode for both the PEMWE reference and the BPEMWE setups 24 because this was found to yield good performance and reproducibility for PEMWE MEAs. 37 A detailed study on the AEI binder content in the anode catalyst layer at constant catalyst loading was performed herein. Therefore, samples with 10, 20, and 50 wt% Aemion binder were prepared using the same spray-coating procedure.…”

Sustainable and rapid preparation of nanosized Fe/Ni-pentlandite particles by mechanochemistry

“…Electrochemical conditioning of the MEA was performed as described previously. 45 Polarization curves were obtained by applying a series of current densities starting from 0.16 A cm À2 up to 1.12 A cm À2 in 160 mA cm À2 steps. Each current density was held for 5 min till a stable potential current density was obtained.…”

“…An inert argon (Ar) atmosphere inside the milling containers was established by preparing the mixtures inside a glovebox. The mechanochemical reactions were performed at a constant rotation speed of 800 rpm and a variable amount of milling balls (6, 8 and 10; ball-to-powder ratio 17.94 : 1, 23.98 : 1 and 29.90 : 1) and milling times(15,30,45 and 60 min).…”

Exploring the Interface of Skin‐Layered Titanium Fibers for Electrochemical Water Splitting

“…Therefore, significant development is needed in order for energy storage applications to achieve rapid and significant market penetration. When dealing with electrochemical devices comprised of a series of functional layers such as those found in batteries, [ 7–9 ] fuel cells, [ 10–12 ] solar cells, [ 13,14 ] electrolyzers, [ 15–17 ] and supercapacitors, [ 18–20 ] a fundamental challenge still exists with regard to properly stabilizing the interfaces generated between the assembled elements, materials, and components. Herein, for the first time, we locally visualize the nanoscopic changes and interplay between the materials in a PEM electrolyzer with a focus on one of the most important interfaces, that between the porous transport layers (PTLs) and electrodes.…”