The influence of the anion exchange membrane on mass-transport limiting phenomena in bipolar interface fuel cells with Fe–N/C based cathode catalyst layers

Abstract

The AEM layer content in a bipolar interface fuel cell enables the opportunity to regulate the influx rate of water into the porous layer.

Highly active ZIF-8@CNT composite catalysts as cathode materials for anion exchange membrane fuel cells

“…The anion exchange membrane (AEM) plays a crucial role in overall AEMFC performance and many studies so far have been performed with the Aemion+ AEM and ionomer, which offers a lower mass transport resistance and water management throughout the AEMFC. 40 To our knowledge, commercial Aemion+® 15 μm AEM has not been tested in AEMFC and this study is the first of its kind to show the potential role of the Aemion+® 15 μm membrane in AEMFC performance. To our knowledge, a hybrid composite of ZIF-8 and CNT derived Fe-Co catalysts and their demonstration in the AEMFC is reported for the first time.…”

Advancements in Bipolar Membrane Electrodialysis Techniques for Carbon Capture

“…The AEL is responsible for transporting anions across the membrane, maintaining charge balance in the system, and facilitating reactions at the membrane interface . In fuel cells, the AEL also contributes to water management, regulating the influx rate of product water from the bipolar interface to prevent flooding of porous layers, which can lead to mass transport limitations . Additionally, the AEL influences the carbon balance in CO 2 electroreduction processes by transporting captured CO 2 in CO 3 2– , subsequently releasing CO 2 and O 2 in the anolyte .…”

“…36 In fuel cells, the AEL also contributes to water management, regulating the influx rate of product water from the bipolar interface to prevent flooding of porous layers, which can lead to mass transport limitations. 37 Additionally, the AEL influences the carbon balance in CO 2 electroreduction processes by transporting captured CO 2 in CO 3 2− , subsequently releasing CO 2 and O 2 in the anolyte. 38 Enhancements such as the deposition of polyelectrolyte multilayers on the AEL can introduce molecularly thin catalyst groups at the interface, improving the water splitting efficiency.…”

Transient Distribution of Water in an Anion Exchange Membrane Fuel Cell Monitored by Operando Coherent Anti-Stokes Raman Scattering Spectroscopy

“…18,27 In this paper, a current jump will be used because the constant current mode is the most widely reported mode for polarization curve measurement in the AEMFC publications. 15,16,[28][29][30][31][32][33][34] A current jump can result in a voltage overshoot or undershoot, depending on the concentration of the reactants. 19 Verma and Pitchumani studied the effect of operation parameters on the transient response of a PEMFC using both experimental and numerical techniques.…”