Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions
The ellipsometric and reflectance response at 5461 A of silver in 0.1 M NaOH at 25°C, is studied in the Ag(O)/Ag(I) potential range when the electrode has been subjected to different complex potentiodynamic perturbations. The optical response depends remarkably on the potential sweep rate, on the ac...
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| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Español |
| Publicado: |
1984
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/118253 |
| Aporte de: |
| id |
I19-R120-10915-118253 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Español |
| topic |
Ciencias Exactas Química Silver Anodic film Ellipsometry |
| spellingShingle |
Ciencias Exactas Química Silver Anodic film Ellipsometry Lopez Teijelo, Manuel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions |
| topic_facet |
Ciencias Exactas Química Silver Anodic film Ellipsometry |
| description |
The ellipsometric and reflectance response at 5461 A of silver in 0.1 M NaOH at 25°C, is studied in the Ag(O)/Ag(I) potential range when the electrode has been subjected to different complex potentiodynamic perturbations. The optical response depends remarkably on the potential sweep rate, on the accumulated anodic charge and on the number of potential cycles. The data of the complex anodic film can he interpreted in terms of a single film model in two limiting cases defined, in,terms of the ancdic charge involved as thin and thick films, respectively: (i)for thin anodic films (Q<sub>a</sub> < 50 mCcm<sup>-2</sup>) n<sub>f</sub> = 1.50 -0.12 i and (ii) for thick anodic films (Q<sub>a</sub> < 50 mCcm<sup>-2</sup>) n<sub>f</sub> = 1.50 - 0.22 i. Time dependence of the optical parameters of both reformed silver and anodic film are shown. Optical results correlates with electrochemical data recently reported and arc discussed in terms of different degree of hydrations For each type of anodic film |
| format |
Articulo Articulo |
| author |
Lopez Teijelo, Manuel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge |
| author_facet |
Lopez Teijelo, Manuel Zerbino, Jorge Omar Vilche, Jorge Roberto Arvia, Alejandro Jorge |
| author_sort |
Lopez Teijelo, Manuel |
| title |
Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions |
| title_short |
Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions |
| title_full |
Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions |
| title_fullStr |
Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions |
| title_full_unstemmed |
Ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions |
| title_sort |
ellipsometry of silver electrodes in base solutions under different potential controlled perturbation conditions |
| publishDate |
1984 |
| url |
http://sedici.unlp.edu.ar/handle/10915/118253 |
| work_keys_str_mv |
AT lopezteijelomanuel ellipsometryofsilverelectrodesinbasesolutionsunderdifferentpotentialcontrolledperturbationconditions AT zerbinojorgeomar ellipsometryofsilverelectrodesinbasesolutionsunderdifferentpotentialcontrolledperturbationconditions AT vilchejorgeroberto ellipsometryofsilverelectrodesinbasesolutionsunderdifferentpotentialcontrolledperturbationconditions AT arviaalejandrojorge ellipsometryofsilverelectrodesinbasesolutionsunderdifferentpotentialcontrolledperturbationconditions |
| bdutipo_str |
Repositorios |
| _version_ |
1764820447644352512 |