Sputtered Cobalt‐Carbon‐Nitrogen Thin Films as Oxygen Reduction Electrocatalysts: I. Physical and Electrochemical Characterization
| Autor: | Charles Z. Deng, Michael J. Dignam |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry Inorganic chemistry Analytical chemistry chemistry.chemical_element Condensed Matter Physics Electrocatalyst Electrochemistry Redox Oxygen Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Amorphous solid Transition metal Materials Chemistry Cobalt |
| Zdroj: | Journal of The Electrochemical Society. 145:3507-3512 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.1838835 |
| Popis: | Thin films of amorphous Co-C-N mixtures which were co-sputtered in vacuum showed good catalyst properties for oxygen reduction in alkaline solution. The optimal catalytic activity was Co{sub 0.68}C{sub 0.16}N{sub 0.16}. The oxygen reduction for these films proceeds via a four-electron pathway and the Co{sup 2+}/Co{sup 3+} redox couple is shown to be responsible for the oxygen reduction reaction. The performance is comparable to transition metal macrocycles in alkaline solutions. Evidently, intact structures of the macrocycles are not necessary for goods catalyst activity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|