Quantifying the Resistive Losses of the Catalytic Layers in Anion‐Exchange Membrane Fuel Cells

Author:

Douglin John C.1ORCID,Vijaya Sankar Kalimuthu12ORCID,Biancolli Ana Laura G.3ORCID,Santiago Elisabete I.3ORCID,Tsur Yoed12ORCID,Dekel Dario R.12ORCID

Affiliation:

1. The Wolfson Department of Chemical Engineering Technion Israel Institute of Technology Haifa 3200003 Israel

2. The Nancy & Stephen Grand Technion Energy Program (GTEP) Technion – Israel Institute of Technology Haifa 3200003 Israel

3. Nuclear and Energy Research Institute, IPEN/CNEN 05508-000 São Paulo Brazil

Abstract

AbstractThe existing gap in the ability to quantify the impacts of resistive losses on the performance of anion‐exchange membrane fuel cells (AEMFCs) during the lifetime of their operation is a serious concern for the technology. In this paper, we analyzed the ohmic region of an operating AEMFC fed with pure oxygen followed by CO2‐free air at various operating currents, using a combination of electrochemical impedance spectroscopy (EIS) and a novel technique called impedance spectroscopy genetic programming (ISGP). Presented here for the first time in this work, we isolated and quantified the individual effective resistance (Reff) values occurring in the AEMFC and their influence on performance as operating conditions change. We believe that this first work is vital to help distinguish the influence of the individual catalytic and mass‐transfer processes in this technology thereby providing valuable data to the AEMFC community, with potentially wider applicability to other electrochemical devices where individual physical processes occur simultaneously and need to be sequestered for deeper understanding.

Funder

Israel Science Foundation

Fundação de Amparo à Pesquisa do Estado de São Paulo

Israeli Smart Transportation Research Center

Israel National Research Center for Electrochemical Propulsion

Publisher

Wiley

Subject

General Energy,General Materials Science,General Chemical Engineering,Environmental Chemistry

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