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Direct sorbitol proton exchange membrane fuel cell using moderate catalyst loadings
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Tillämpad elektrokemi.
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Tillämpad elektrokemi.ORCID-id: 0000-0002-0452-0703
Vise andre og tillknytning
2014 (engelsk)Inngår i: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 116, s. 379-387Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Recent progress in biomass hydrolysis has made it interesting to study the use of sorbitol for electricity generation. In this study, sorbitol and glucose are used as fuels in proton exchange membrane fuel cells having 0.9 mg cm(-2) PtRu/C at the anode and 0.3 mg cm(-2) Pt/C at the cathode. The sorbitol oxidation was found to have slower kinetics than glucose oxidation. However, at low temperatures the direct sorbitol fuel cell shows higher performance than the direct glucose fuel cell, attributed to a lower degree of catalyst poisoning. The performance of both fuel cells is considerably improved at higher temperatures. High temperatures lower the poisoning, allowing the direct glucose fuel cell to reach a higher performance than the direct sorbitol fuel cell. The mass specific peak power densities of the direct sorbitol and direct glucose fuel cells at 65 degrees C was 3.2 mW Mg-catalyst(-1) and 3.5 mW Mg-catalyst(-1), respectively. Both of these values are one order of magnitude larger than mass specific peak power densities of earlier reported direct glucose fuel cells using proton exchange membranes. Furthermore, both the fuel cells showed a considerably decrease in performance with time, which is partially attributed to sorbitol and glucose crossover poisoning the Pt/C cathode.

sted, utgiver, år, opplag, sider
2014. Vol. 116, s. 379-387
Emneord [en]
Direct sorbitol fuel cell, Direct glucose fuel cell, Proton exchange membrane, Supported PtRu catalyst, Performance
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-143457DOI: 10.1016/j.electacta.2013.11.070ISI: 000331494400052Scopus ID: 2-s2.0-84889997436OAI: oai:DiVA.org:kth-143457DiVA, id: diva2:707667
Forskningsfinansiär
Mistra - The Swedish Foundation for Strategic Environmental ResearchSwedish Research Council
Merknad

QC 20140325

Tilgjengelig fra: 2014-03-25 Laget: 2014-03-21 Sist oppdatert: 2017-12-05bibliografisk kontrollert

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Oyarce, AlejandroWreland Lindström, RakelLagergren, CarinaLindbergh, Göran
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