Poly(vinylidene fluoride) based anion conductive ionomer as a catalyst binder for application in anion exchange membrane fuel cell

Integration of a Pd-CeO2/C Anode with Pt and Pt-Free Cathode Catalysts in High Power Density Anion Exchange Membrane Fuel Cells

“…3,4 AEIs play a key role in the performance of AEMFCs, as they serve to bind catalyst particles to the thin electrode layer, creating a porous anion conducting architecture to facilitate the transport of anions, electrons, reactants, and products (especially H 2 O). 5 The alkaline environment of AEMFCs potentially allows for the use of Pt-free catalysts for both the oxygen reduction reaction (ORR) and the hydrogen oxidation reaction (HOR), but the HOR kinetics of Pt are poorer (at least 2 orders of magnitude) in alkaline than in acidic media. 6 The kinetics for both reactions on non-Pt metal surfaces are significantly reduced, hence publications are rare that report Pt-free AEMFC power outputs around 1 W cm −2 in magnitude.…”

“…Anion exchange membrane fuel cells (AEMFCs) are receiving growing attention due to potential advantages over more established proton exchange membrane fuel cells (PEMFCs), including a wider range of oxygen reduction catalyst options involving inexpensive (potentially more sustainable) elements, a wider choice of cheaper and more easily fabricated cell and stack components, and less expensive polymer electrolyte options. , Initially, the main obstacle to the development of these devices was the availability of anion exchange membranes (AEMs) and ionomers (AEIs) with anion (OH – ) conductivities and stabilities in highly alkaline environments that were high enough to allow an adequate evaluation of catalyst options and operando performances. Consequently, significant effort has been devoted to the development of new polymeric electrolytes to satisfy such criteria. , AEIs play a key role in the performance of AEMFCs, as they serve to bind catalyst particles to the thin electrode layer, creating a porous anion conducting architecture to facilitate the transport of anions, electrons, reactants, and products (especially H 2 O) …”

Anion exchange membranes derived from nafion precursor for the alkaline fuel cell: Effect of cation type on properties

“…To date, most hydroxide conducting AEMs synthesized consist of a covalently attached ammonium cation as the conducting group 11–28. Ammonium cations in AEMs are susceptible to neutralization from hydroxide ion attack via a number of degradation mechanisms, including S N 2, Hofmann (E2) elimination, Stevens rearrangement, and Sommelet–Hauser rearrangement 3,29–32.…”

Alternative architectures and materials for PEMFC gas diffusion layers: A review and outlook

“…A peak power density to 0.56 W cm − 2 was measured compared to 0.20 W cm − 2 using Nafion as a binder. Zhang et al [183] investigated PVDF for the anion exchange membrane fuel cells; similarly they found that using PVDF as a binder in the MPL increases the catalytic activity.…”