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  Highly active nanostructured palladium-ceria electrocatalysts for the hydrogen oxidation reaction in alkaline medium

Miller, H. A., Vizza, F., Marelli, M., Zadick, A., Dubau, L., Chatenet, M., et al. (2017). Highly active nanostructured palladium-ceria electrocatalysts for the hydrogen oxidation reaction in alkaline medium. Nano Energy, 33, 293-305. doi:10.1016/j.nanoen.2017.01.051.

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Miller, Hamish A.1, Author           
Vizza, Francesco1, Author           
Marelli, Marcello2, Author           
Zadick, Anicet3, 4, Author           
Dubau, Laetitia3, 4, Author           
Chatenet, Marian3, 4, 5, Author           
Geiger, Simon6, Author           
Cherevko, Serhiy6, 7, Author           
Doan, Huong8, Author           
Pavlicek, Ryan K.8, Author           
Mukerjee, Sanjeev8, Author           
Dekel, Dario R.9, 10, Author           
1Istituto di Chimica dei Composti Organometallici (CNR-ICCOM), via Madonna del Piano 10, Sesto Fiorentino, Firenze, Italy, persistent22              
2Istituto di Scienze e Tecnologie Molecolari (ISTM-CNR), via Camillo Golgi 19, Milano, Italy, persistent22              
3CNRS, LEPMI, Grenoble, France, persistent22              
4University of Grenoble Alpes, LEPMI, Grenoble, France, persistent22              
5French University Institute (IUF), Paris, France, persistent22              
6Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
7Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              
8Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA, persistent22              
9The Nancy & Stephan Grand Technion Energy Program (GTEP), Technion – Israel Institute of Technology, Haifa, Israel, persistent22              
10The Wolfson Department of Chemical Engineering, Technion – Israel Institute of Technology, Haifa, Israel, persistent22              


Free keywords: ANION-EXCHANGE MEMBRANES; PEROXIDE FUEL-CELL; PLATINUM DISSOLUTION; SURFACE-AREA; ACIDIC MEDIA; PERFORMANCE; CATALYSTS; ELECTROLYTE; STABILITY; BEHAVIORChemistry; Science & Technology - Other Topics; Materials Science; Physics; Fuel cell; Platinum free; Anion exchange membrane; Palladium; Ceria, hydrogen oxidation;
 Abstract: We report an interesting new class of bifunctional electrocatalysts, Pd/C-CeO2, with excellent activity and stability for the hydrogen oxidation reaction (HOR) under alkaline conditions. The unique structure of palladium deposited onto a mixed support of Vulcan XC-72 carbon and CeO2 consists of Pd metal preferable deposited on the ceria regions of the catalyst. The CeO2-Pd interaction leads to enhanced HOR kinetics and increased stability. Here we compare catalysts with three different Pd loadings and show that the 10 wt% Pd sample has optimized activity. Hydrogen pumping and fuel cell experiments based on this catalyst show higher activities as compared to a Pd/C sample without ceria. Metal dissolution tests and identical location transmission microscopy experiments show that the catalyst stability under harsh potential cycling experiments in alkaline medium is significantly improved as compared to Pd/C, making this material one of the best options for use as highly active and highly stable electrocatalysts for the HOR in anion exchange membrane fuel cells.


Language(s): eng - English
 Dates: 2017-03-01
 Publication Status: Published in print
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -



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Source 1

Title: Nano Energy
Source Genre: Journal
Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 33 Sequence Number: - Start / End Page: 293 - 305 Identifier: Other: 2211-2855
CoNE: https://pure.mpg.de/cone/journals/resource/2211-2855