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Electrode parameters and operating conditions influencing the performance of anion exchange membrane fuel cells
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.ORCID iD: 0000-0001-9203-9313
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2018 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 277, p. 151-160Article in journal (Refereed) Published
Abstract [en]

A deeper understanding of porous electrode preparation and performance losses is necessary to advance the anion exchange membrane fuel cell (AEMFC) technology. This study has investigated the performance losses at 50 °C for varied: Tokuyama AS-4 ionomer content in the catalyst layer, Pt/C loading and catalyst layer thickness at the anode and cathode, relative humidity, and anode catalyst. The prepared gas diffusion electrodes in the interval of ionomer-to-Pt/C weight ratio of 0.4–0.8 or 29–44 wt% ionomer content show the highest performance. Varying the loading and catalyst layer thickness simultaneously shows that both the cathode and the anode influence the cell performance. The effects of the two electrodes are shown to vary with current density and this is assumed to be due to non-uniform current distribution throughout the electrodes. Further, lowering the relative humidity at the anode and cathode separately shows small performance losses for both electrodes that could be related to lowered ionomer conductivity. Continued studies are needed to optimize, and understand limitations of, each of the two electrodes to obtain improved cell performance.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 277, p. 151-160
Keyword [en]
AEMFC, Electrode morphology, Electrode performance, Ionomer content, Pt/C catalyst
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-228724DOI: 10.1016/j.electacta.2018.04.137ISI: 000433044200017Scopus ID: 2-s2.0-85046745654OAI: oai:DiVA.org:kth-228724DiVA, id: diva2:1210751
Funder
Swedish Energy Agency
Note

QC 20180529

Available from: 2018-05-29 Created: 2018-05-29 Last updated: 2018-06-13Bibliographically approved

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Carlson, AnnikaEriksson, BjörnLindbergh, GöranLagergren, Carina

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