This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1002/ange.201702332 in citations.
The Effect of Surface Site Ensembles on the Activity and Selectivity of Ethanol Electrooxidation by Octahedral PtNiRh Nanoparticles
The Effect of Surface Site Ensembles on the Activity and Selectivity of Ethanol Electrooxidation by Octahedral PtNiRh Nanoparticles
Direct ethanol fuel cells are attractive power sources based on a biorenewable, high energy-density fuel. Their efficiency is limited by the lack of active anode materials which catalyze the breaking of the C−C bond coupled to the 12-electron oxidation to CO2. We report shape-controlled PtNiRh octah...
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Personal Name(s): | Erini, Nina |
---|---|
Beermann, Vera / Gocyla, Martin / Gliech, Manuel / Heggen, Marc / Dunin-Borkowski, Rafal / Strasser, Peter (Corresponding author) | |
Contributing Institute: |
Mikrostrukturforschung; PGI-5 Physik Nanoskaliger Systeme; ER-C-1 |
Published in: | Angewandte Chemie, 129 (2017) 23, S. 6633 - 6638 |
Imprint: |
Weinheim
Wiley-VCH65543
2017
|
DOI: |
10.1002/ange.201702332 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena |
Publikationsportal JuSER |
Direct ethanol fuel cells are attractive power sources based on a biorenewable, high energy-density fuel. Their efficiency is limited by the lack of active anode materials which catalyze the breaking of the C−C bond coupled to the 12-electron oxidation to CO2. We report shape-controlled PtNiRh octahedral ethanol oxidation electrocatalysts with excellent activity and previously unachieved low onset potentials as low as 0.1 V vs. RHE, while being highly selective to complete oxidation to CO2. Our comprehensive characterization and in situ electrochemical ATR studies suggest that the formation of a ternary surface site ensemble around the octahedral Pt3Ni1Rhx nanoparticles plays a crucial mechanistic role for this behavior. |