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Journal article
Using Surface Segregation To Design Stable Ru-Ir Oxides for the Oxygen Evolution Reaction in Acidic Environments
Angewandte Chemie (International ed.), v 53(51), pp 14016-14021
15 Dec 2014
PMID: 25297010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The methods used to improve catalytic activity are well-established, however elucidating the factors that simultaneously control activity and stability is still lacking, especially for oxygen evolution reaction (OER) catalysts. Here, by studying fundamental links between the activity and stability of well-characterized monometallic and bimetallic oxides, we found that there is generally an inverse relationship between activity and stability. To overcome this limitation, we developed a new synthesis strategy that is based on tuning the near-surface composition of Ru and Ir elements by surface segregation, thereby resulting in the formation of a nanosegregated domain that balances the stability and activity of surface atoms. We demonstrate that a Ru0.5Ir0.5 alloy synthesized by using this method exhibits four-times higher stability than the best Ru-Ir oxygen evolution reaction materials, while still preserving the same activity.
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Details
- Title
- Using Surface Segregation To Design Stable Ru-Ir Oxides for the Oxygen Evolution Reaction in Acidic Environments
- Creators
- Nemanja Danilovic - Argonne National LaboratoryRamachandran Subbaraman - Argonne National LaboratoryKee Chul Chang - Argonne National LaboratorySeo Hyoung Chang - Argonne National LaboratoryYijin Kang - Argonne National LaboratoryJoshua Snyder - Argonne National LaboratoryArvydas Paul Paulikas - Argonne National LaboratoryDusan Strmcnik - Argonne National LaboratoryYong Tae Kim - Pusan National UniversityDeborah Myers - Argonne National LaboratoryVojislav R. Stamenkovic - Argonne National LaboratoryNenad M. Markovic - Argonne National Laboratory
- Publication Details
- Angewandte Chemie (International ed.), v 53(51), pp 14016-14021
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy; United States Department of Energy (DOE) US Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division; United States Department of Energy (DOE) DE-AC02-06CH11357 / US Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) Electron Microscopy Center (ANL)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000346484400006
- Scopus ID
- 2-s2.0-84917706702
- Other Identifier
- 991019296571004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary