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Electrode parameters and operating conditions influencing the performance of anion exchange membrane fuel cells
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Kemiteknik, Tillämpad elektrokemi.
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Kemiteknik, Tillämpad elektrokemi.
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Kemiteknik, Tillämpad elektrokemi.
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Kemiteknik, Tillämpad elektrokemi.ORCID-id: 0000-0001-9203-9313
Vise andre og tillknytning
2018 (engelsk)Inngår i: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 277, s. 151-160Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 277, s. 151-160
Emneord [en]
AEMFC, Electrode morphology, Electrode performance, Ionomer content, Pt/C catalyst
HSV kategori
Identifikatorer
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
Forskningsfinansiär
Swedish Energy Agency
Merknad

QC 20180529

Tilgjengelig fra: 2018-05-29 Laget: 2018-05-29 Sist oppdatert: 2018-06-13bibliografisk kontrollert

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Carlson, AnnikaShapturenka, PavelEriksson, BjörnLindbergh, GöranLagergren, CarinaWreland Lindström, Rakel
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