A Cationic Diode Based on Asymmetric Nafion Film Deposits.
ACS Appl Mater Interfaces
; 9(12): 11272-11278, 2017 Mar 29.
Article
em En
| MEDLINE
| ID: mdl-28287696
ABSTRACT
A thin film of Nafion, of approximately 5 µm thickness, asymmetrically deposited onto a 6 µm thick film of poly(ethylene terephthalate) (PET) fabricated with a 5, 10, 20, or 40 µm microhole, is shown to exhibit prominent ionic diode behavior involving cation charge carrier ("cationic diode"). The phenomenon is characterized via voltammetric, chronoamperometric, and impedance methods. Phenomenologically, current rectification effects are comparable to those observed in nanocone devices where space-charge layer effects dominate. However, for microhole diodes a resistive, a limiting, and an overlimiting potential domain can be identified and concentration polarization in solution is shown to dominate in the closed state.
Texto completo:
1
Base de dados:
MEDLINE
Tipo de estudo:
Qualitative_research
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article