Tailoring the Selectivity and Stability of Chemically Modified Platinum Nanocatalysts To Design Highly Durable Anodes for PEM Fuel Cells

Tailoring the Selectivity and Stability of Chemically Modified Platinum Nanocatalysts To Design Highly Durable Anodes for PEM Fuel Cells

Big and small: Chemically modifying platinum with calix[4]arene yields a highly stable anode catalyst that effectively suppresses the oxidation reduction reaction without altering the maximum activity for the hydrogen oxidation reaction (see picture, Pt blue, C gray, O red, S yellow). This behavior...

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Veröffentlicht in:Angew. Chem 2011-06, Vol.50 (24), p.5468-5472
Hauptverfasser: Genorio, Bostjan, Subbaraman, Ram, Strmcnik, Dusan, Tripkovic, Dusan, Stamenkovic, Vojislav R., Markovic, Nenad M.
Format: Artikel
Sprache:eng
Schlagworte:
08 HYDROGEN
30 DIRECT ENERGY CONVERSION
ANODES
CALIXARENES
CATALYSTS
DESIGN
ELECTROCHEMISTRY
FUEL CELLS
HETEROGENEOUS CATALYSIS
HYDROGEN
OXIDATION
OXYGEN
oxygen reduction reaction
PLATINUM
STABILITY
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Beschreibung
Zusammenfassung:Big and small: Chemically modifying platinum with calix[4]arene yields a highly stable anode catalyst that effectively suppresses the oxidation reduction reaction without altering the maximum activity for the hydrogen oxidation reaction (see picture, Pt blue, C gray, O red, S yellow). This behavior extends from long‐range‐ordered stepped single‐crystal surfaces to nanocatalysts.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201100744