Core-Protected Platinum Monolayer Shell High-Stability Electrocatalysts for Fuel-Cell Cathodes
| Autor: | Jia X. Wang, Ping Liu, Miomir B. Vukmirovic, Kotaro Sasaki, Yun Cai, Hideo Naohara, Radoslav R. Adzic, YongMan Choi |
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| Rok vydání: | 2010 |
| Předmět: |
inorganic chemicals
Chemical substance endocrine system diseases Inorganic chemistry chemistry.chemical_element General Chemistry General Medicine female genital diseases and pregnancy complications Catalysis Cathode law.invention Direct energy conversion chemistry law Monolayer Platinum Science technology and society Dissolution Palladium |
| Zdroj: | Angewandte Chemie. 122:8784-8789 |
| ISSN: | 0044-8249 |
| DOI: | 10.1002/ange.201004287 |
| Popis: | More than skin deep: Platinum monolayers can act as shells for palladium nanoparticles to lead to electrocatalysts with high activities and an ultralow platinum content, but high platinum utilization. The stability derives from the core protecting the shell from dissolution. In fuel-cell tests, no loss of platinum was observed in 200?000 potential cycles, whereas loss of palladium was significant. |
| Databáze: | OpenAIRE |
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