Journal article
Selective catalysts for the hydrogen oxidation and oxygen reduction reactions by patterning of platinum with calix[4]arene molecules
Nature materials, v 9(12), pp 998-1003
01 Dec 2010
PMID: 21037564
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The design of new catalysts for polymer electrolyte membrane fuel cells must be guided by two equally important fundamental principles: optimization of their catalytic behaviour as well as the long-term stability of the metal catalysts and supports in hostile electrochemical environments(1,2). The methods used to improve catalytic activity are diverse(3-8), ranging from the alloying(3,4) and de-alloying(5) of platinum to the synthesis of platinum core-shell catalysts(6). However, methods to improve the stability of the carbon supports and catalyst nanoparticles are limited(9,10), especially during shutdown (when hydrogen is purged from the anode by air) and startup (when air is purged from the anode by hydrogen) conditions when the cathode potential can be pushed up to 1.5V (ref. 11). Under the latter conditions, stability of the cathode materials is strongly affected (carbon oxidation reaction) by the undesired oxygen reduction reaction (ORR) on the anode side. This emphasizes the importance of designing selective anode catalysts that can efficiently suppress the ORR while fully preserving the Pt-like activity for the hydrogen oxidation reaction. Here, we demonstrate that chemically modified platinum with a self-assembled monolayer of calix[4] arene molecules meets this challenging requirement.
Metrics
Details
- Title
- Selective catalysts for the hydrogen oxidation and oxygen reduction reactions by patterning of platinum with calix[4]arene molecules
- Creators
- Bostjan Genorio - University of LjubljanaDusan Strmcnik - Argonne National LaboratoryRam Subbaraman - Argonne National LaboratoryDusan Tripkovic - Argonne National LaboratoryGoran Karapetrov - Argonne National LaboratoryVojislav R. Stamenkovic - Argonne National LaboratoryStane Pejovnik - University of LjubljanaNenad M. Markovic - Argonne National LaboratoryArgonne National Lab. (ANL), Argonne, IL (United States)
- Publication Details
- Nature materials, v 9(12), pp 998-1003
- Publisher
- Springer Nature
- Number of pages
- 6
- Grant note
- Center of Excellence Low Carbon Technologies (CO NOT) DE-AC03-76SF00098 / Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences, US Department of Energy; United States Department of Energy (DOE) ARRS-3311-04-831034 / Ministry of Higher Education, Science and Technology of Slovenia
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000284525300020
- Scopus ID
- 2-s2.0-78649988284
- Other Identifier
- 991019295297104721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter