Polymer electrolyte membrane fuel cell operating in stoichiometric regime

Abstract

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. This is an author-deposited version published in: https://sam.ensam.eu Handle ID� Fuel cell stoichiometric regime is evidenced at global and local scale. � Cathode channel mass transport governs the fuel cell performance in this regime. � Low frequency spectral signature of stoichiometric regime is measured using EIS. � Current density distributions are measured using a segmented flow field. � Fuel cell kinetic parameters can be easily measured in stoichiometric regime. A B S T R A C TIn this work, we report the existence of a stoichiometric regime where the performances of operating polymer electrolyte membrane (PEM) fuel cells are entirely governed by the mass transport in the cathode channels. An analytical model of the fuel cell stoichiometric regime is derived and evidenced experimentally: from the cell spectral signature at low frequency based on electrochemical impedance spectroscopy, and from the current density distribution measured using a segmented current collector. The existence of such regime provides a simple way to characterize, model and predict PEM fuel cell performances.

Impact of NaCl Spray on the Durability of PEMFC Single Cells and Stacks in Marine Environment

“…Experimental setup and fuel cells specifications.-Single cells selected for the tests have an active area of 11.76 cm 2 (19.6 × 0.6 cm) and were mounted on the setup presented in Chevalier et al work, 24 without the segmented channels. Two types of MEA were studied, from different suppliers, to compare their durability when exposed to NaCl.…”

Multiscale Study of PEMFC in Marine Environment: Impact of a NaCl Spray on Durability

“…Single Cells Setup. Single cells selected for the tests have an active area of 11.76 cm² (19.6 x 0.6 cm) and were mounted on the setup presented in Chevalier et al (4), without the segmented channels. Two types of MEA were studied, from different suppliers, to compare their durability when exposed to NaCl.…”

PEMYH için COMSOL'da Üç Boyutlu Çoklu Akış Modeliyle Altın Oran Yöntemi ile Oksijen ve Hidrojen Giriş Hızlarının Optimizasyonu

“…This study shows that the losses in the cell change in direct proportion to the current density [18]. The effects of excess air volume investigated on the cathode and current density along the channel for a two-dimensional PEMFC in their study [19]. Water management on a two dimensional and multi flow PEMFC was examined.…”