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Dieter von Deak

Ohio State University

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Featured researches published by Dieter von Deak.

Electrochemical and Solid State Letters | 2010

RRDE Catalyst Ink Aging Effects on Selectivity to Water Formation in ORR

Elizabeth J. Biddinger; Dieter von Deak; Hilary S. Marsh; Umit S. Ozkan

Rotating ring-disk electrode (RRDE) testing is commonly used for determining the activity and selectivity of oxygen reduction reaction (ORR) catalysts. The effect of RRDE catalyst ink aging on the reported selectivity to water formation was studied for both commercial Pt/Vulcan carbon and nitrogen-containing nanostructured carbon (CN x ) catalysts. Aging the ink before application could cause a significant improvement in the selectivity measured. While the reasons behind this improvement in selectivity are not yet clear, possible explanations include changes in physical properties of the catalyst, changes in surface hydrophilicity, and changes in surface oxygen functional groups.

Topics in Catalysis | 2009

Nitrogen-Containing Carbon Nanostructures as Oxygen-Reduction Catalysts

Elizabeth J. Biddinger; Dieter von Deak; Umit S. Ozkan

Journal of Catalysis | 2011

Ethanol steam reforming over Co-based catalysts: Investigation of cobalt coordination environment under reaction conditions

Burcu Bayram; I. Ilgaz Soykal; Dieter von Deak; Jeffrey T. Miller; Umit S. Ozkan

Carbon | 2010

The effect of phosphorus in nitrogen-containing carbon nanostructures on oxygen reduction in PEM fuel cells

Dieter von Deak; Elizabeth J. Biddinger; Katherine A. Luthman; Umit S. Ozkan

Topics in Catalysis | 2013

A First-Principles Study of the Role of Quaternary-N Doping on the Oxygen Reduction Reaction Activity and Selectivity of Graphene Edge Sites

Xiaoguang Bao; Xiaowa Nie; Dieter von Deak; Elizabeth J. Biddinger; Wenjia Luo; Aravind Asthagiri; Umit S. Ozkan; Christopher M. Hadad

Journal of The Electrochemical Society | 2011

Examination of Catalyst Loading Effects on the Selectivity of CNx and Pt/VC ORR Catalysts Using RRDE

Elizabeth J. Biddinger; Dieter von Deak; Deepika Singh; Hilary S. Marsh; Bing Tan; Douglas S. Knapke; Umit S. Ozkan

Journal of Catalysis | 2012

Investigation of sulfur poisoning of CNx oxygen reduction catalysts for PEM fuel cells

Dieter von Deak; Deepika Singh; Elizabeth J. Biddinger; Jesaiah C. King; Burcu Bayram; Jeffrey T. Miller; Umit S. Ozkan

Applied Catalysis B-environmental | 2010

Effect of sulfur as a growth promoter for CNx nanostructures as PEM and DMFC ORR catalysts

Elizabeth J. Biddinger; Douglas S. Knapke; Dieter von Deak; Umit S. Ozkan

Applied Catalysis B-environmental | 2012

Use of carbon monoxide and cyanide to probe the active sites on nitrogen-doped carbon catalysts for oxygen reduction

Dieter von Deak; Deepika Singh; Jesaiah C. King; Umit S. Ozkan

Journal of Catalysis | 2013

In situ characterization of the growth of CNx carbon nano-structures as oxygen reduction reaction catalysts

Deepika Singh; I. Ilgaz Soykal; Juan Tian; Dieter von Deak; Jesaiah King; Jeffrey T. Miller; Umit S. Ozkan

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Umit S. Ozkan

Ohio State University

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Elizabeth J. Biddinger

City College of New York

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Deepika Singh

Ohio State University

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Jeffrey T. Miller

Argonne National Laboratory

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Burcu Bayram

Ohio State University

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Christopher M. Hadad

Ohio State University

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Douglas S. Knapke

Ohio State University

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Hilary S. Marsh

Ohio State University

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I. Ilgaz Soykal

Ohio State University

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Jesaiah C. King

Ohio State University

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