Sanz-Navarro, Carlos Federico and Lee, Siaw Foon and Yap, Seong Shan and Nee, Chen Hon and Yap, Seong Ling (2023) Electrochemical stability and corrosion mechanism of fluorine-doped tin oxide film under cathodic polarization in near neutral electrolyte. Thin Solid Films, 768. ISSN 0040-6090, DOI https://doi.org/10.1016/j.tsf.2023.139697.
Full text not available from this repository.Abstract
Commercial fluorine-doped tin oxide (FTO) coated glass slides were subjected to different cathodic potentials for 15 min in 0.2 M Na2SO4 of pH 6.42 to study their electrochemical stability. Results showed that FTO could maintain its electrochemical stability until-1200 mV. However, when it was cathodically polarized from-1600 mV to more negative potentials, band structure positions started to shift upwards, the electrolyte became more acidic and a porous structure appeared on the FTO surface. At-2000 mV, a layer of metallic Sn was seen deposited on the FTO surface, verified by X-ray diffraction and scanning electron microscopy - energy dispersive X-ray spectroscopy. During the cathodic corrosion in near neutral electrolyte, the reduction of SnO2 to Sn in-volves water oxidation as well as hydrogen evolution reaction.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia (Grant No: FRGS/1/2019/TK07/MMU/03/4), CRUE-CSIC, Elsevier |
| Uncontrolled Keywords: | Fluorine-doped tin oxide; Electrochemical impedance spectroscopy; Mott-schottky analysis; Cathodic potential |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 01 Dec 2023 01:26 |
| Last Modified: | 01 Dec 2023 01:26 |
| URI: | http://eprints.um.edu.my/id/eprint/38776 |
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