Record link: 
http://hdl.handle.net/20.500.12708/143109
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Title: 
DEMS studies of the ethanol electro-oxidation on TiOC supported Pt catalysts–Support effects for higher CO₂ efficiency
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Citation: 
Shakibi Nia, N., Martucci, A., Granozzi, G., García, G., Pastor, E., Penner, S., Bernardi, J., Alonso-Vante, N., & Kunze-Liebhäuser, J. (2019). DEMS studies of the ethanol electro-oxidation on TiOC supported Pt catalysts–Support effects for higher CO₂ efficiency. Electrochimica Acta, 304, 80–86. https://doi.org/10.1016/j.electacta.2019.02.089
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Publisher DOI: 
10.1016/j.electacta.2019.02.089
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
Shakibi Nia, Niusha 
Martucci, Alessandro 
Granozzi, Gaetano 
García, Gonzalo 
Pastor, Elena 
Penner, Simon 
Bernardi, Johannes 
Alonso-Vante, Nicolas 
Kunze-Liebhäuser, Julia 
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Organisational Unit: 
E057-02 - Fachbereich Universitäre Serviceeinrichtung für Transmissions- Elektronenmikroskopie 
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Journal: 
Electrochimica Acta 
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ISSN: 
0013-4686
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Date (published): 
1-May-2019
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Number of Pages: 
7
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Publisher: 
PERGAMON-ELSEVIER SCIENCE LTD
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Peer reviewed: 
Yes
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Keywords: 
General Chemical Engineering; Electrochemistry
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Abstract: 
Direct ethanol fuel cells are highly promising energy conversion devices, but the complete oxidation of ethanol to CO₂ at low temperatures is still one of the main challenges. Titanium oxycarbide (TiO₁₋ₓCₓ) powder is investigated as stable and synergistic support for Pt nanoparticles during the ethanol oxidation reaction (EOR) in acidic electrolytes. EOR products are quantitatively detected online with differential electrochemical mass spectrometry. At room temperature, Pt/TiO₁₋ₓCₓ has a CO₂ efficiency maximum of 8.9%, while only 1.7% are measured for Pt nanoparticles on Vulcan carbon (Pt/C). The reaction pathway is channeled towards the formation of C1 products, while C2 product formation is suppressed. This effect is expected to be much enhanced at elevated temperatures which makes TiO₁₋ₓCₓ a highly interesting catalyst support material in general.
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Research Areas: 
Special and Engineering Materials: 40%
Materials Characterization: 30%
Surfaces and Interfaces: 30%
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Science Branch: 
Physik, Astronomie
Chemie
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