E057-02 - Fachbereich Universitäre Serviceeinrichtung für Transmissions- Elektronenmikroskopie
-
Zeitschrift:
Electrochimica Acta
-
ISSN:
0013-4686
-
Datum (veröffentlicht):
1-Mai-2019
-
Umfang:
7
-
Verlag:
PERGAMON-ELSEVIER SCIENCE LTD
-
Peer Reviewed:
Ja
-
Keywords:
General Chemical Engineering; Electrochemistry
en
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.
en
Forschungsschwerpunkte:
Special and Engineering Materials: 40% Materials Characterization: 30% Surfaces and Interfaces: 30%
