Citation
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. p. 139697. ISSN 0040-6090
Text
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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 involves water oxidation as well as hydrogen evolution reaction.
Item Type: | Article |
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Uncontrolled Keywords: | Fluorine-doped tin oxide, Electrochemical impedance spectroscopy, Mott–schottky analysis, Cathodic potential |
Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK9001-9401 Nuclear engineering. Atomic power |
Divisions: | Faculty of Engineering (FOE) |
Depositing User: | Ms Nurul Iqtiani Ahmad |
Date Deposited: | 01 Mar 2023 06:03 |
Last Modified: | 02 Mar 2023 06:18 |
URII: | http://shdl.mmu.edu.my/id/eprint/11174 |
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