Scanning tunneling microscopy of amorphous alloy electrocatalysts for water electrolysis
The surface topography of amorphous metals useful as electrocatalysts in water electrolysis, denoted as G16 (Cos<sub>50</sub>Ni<sub>25</sub>Si<sub>15</sub>Bu<sub>10</sub>) and G14 (Fe<sub>60</sub>Co<sub>20</sub>Si<sub>10&l...
| Autores: | , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1989 |
| País: | Argentina |
| Recursos: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/127148 |
| Acesso em linha: | http://sedici.unlp.edu.ar/handle/10915/127148 |
| Access Level: | acceso abierto |
| Palavra-chave: | Ciencias Exactas Química water scanning tunneling microscopy surface |
| Resumo: | The surface topography of amorphous metals useful as electrocatalysts in water electrolysis, denoted as G16 (Cos<sub>50</sub>Ni<sub>25</sub>Si<sub>15</sub>Bu<sub>10</sub>) and G14 (Fe<sub>60</sub>Co<sub>20</sub>Si<sub>10</sub>B<sub>10</sub>), are studied at the gm scale with a conventional SEM, and at the nm scale with the STM. Both untreated specimens as well as those employed as electrodes for a relatively prolonged time exhibit the same microstructure with amorphous and crystalline surface regions. The microcrystallite reduced size structure, probably involving a very compact structure, appears to be of the greatest importance concerning the electrocatalytic activity of these materials. |
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