| Texto completo | |
| Autor(es): |
Pan, Changwei
;
Cheng, Ruolan
;
Birzu, Adrian
;
Yang, Jiaping
;
Ren, Lin
;
Varela, Hamilton
;
Gao, Qingyu
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CHEMELECTROCHEM; v. 4, n. 8, p. 2075-2078, AUG 2017. |
| Citações Web of Science: | 0 |
| Resumo | |
In the transpassive region of sulfide electro-oxidation on platinum, the system displayed different complex oscillations under potentiostatic control experiments, changing from quasiperiodic small oscillations to alternate modes between small and large amplitude oscillations for increasing applied voltages. In each period of the alternating-mode oscillations, the current density evolves from a slightly decreasing steady state to small and large amplitude oscillations. Spatiotemporal patterns developed on the platinum disk were recorded with a CCD camera and ranged from breathing spots to alternating patterns between breathing spots and synchronous deposition/dissolution. Karhunen-Loeve decomposition analysis of the experimental patterns showed that the twinkling patterns had multiple modes each with a low percentage of energy, whereas the alternate patterns were mainly characterized by one dominant mode. (AU) | |
| Processo FAPESP: | 13/16930-7 - Eletrocatálise V: processos eletrocatalíticos de interconversão entre as energias química e elétrica |
| Beneficiário: | Edson Antonio Ticianelli |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |