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Pyrolyzed macrocycles on high surface area carbons for the reduction of oxygen in alkaline fuel cells
KTH, School of Chemical Science and Engineering (CHE).
1991 (English)In: Journal of Power Sources, ISSN 03787753 (ISSN), Vol. 36, no 4, 547-555 p.Article in journal (Refereed) Published
Abstract [en]

Polarization characteristics and preparation methods of double-layer porous gas diffusion electrodes on various carbon materials in alkaline fuel cells were investigated. The electrodes with active carbon carriers were catalyzed with cobalt/iron tetraphonylporphyrin or silver. These electrodes show a potential of - 186 mV (versus Hg/HgO) at 1.0 A/cm2 when operated with oxygen at 40 °C and 5 M KOH. Various techniques such as surface area measurements, scanning (SEM) and transmission (TEM) electron microscopy in combination with energy dispersive spectroscopy (EDS) and electron energy loss spectroscopy (EELS) were used to characterize the structure and morphology of the catalyst layer. © 1991.

Place, publisher, year, edition, pages
1991. Vol. 36, no 4, 547-555 p.
Keyword [en]
Electrochemistry--Measurements, Alkaline Fuel Cells, Metalloporphyrins, Pyrolyzed Macrocycles, Fuel Cells
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-62363OAI: oai:DiVA.org:kth-62363DiVA: diva2:480208
Note
Correspondence Address: Kiros, Y.; Royal Institute of Technology, Department of Chemical Technology, S-100 44 Stockholm, Sweden NR 20140805Available from: 2012-01-19 Created: 2012-01-19 Last updated: 2012-01-19Bibliographically approved

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