Electrochemical impedance of mercury electrodes with hematite particles adhered
The effect of hematite particles adhesion on the electrochemical impedance of mercury electrodes was studied at different electrode potentials. The impedance decreases as the number of attached particles increases; this impedance decrease is related to strong adhesion of particles. The impedance dia...
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2001
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01694243_v15_n12_p1503_Andrade http://hdl.handle.net/20.500.12110/paper_01694243_v15_n12_p1503_Andrade |
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paper:paper_01694243_v15_n12_p1503_Andrade2023-06-08T15:18:19Z Electrochemical impedance of mercury electrodes with hematite particles adhered Molina, Fernando Victor Electrochemical impedance Equivalent circuit Hematite Particle adhesion Pore model Colloids Computer simulation Electric impedance Electrochemical electrodes Equivalent circuits Mercury (metal) Particles (particulate matter) Electrodes Hematite Iron ores ELectrochemical impedance Hematite Adhesion AC signals Constant phase element Electrochemical impedance Electrode potentials Hematite particles Impedance diagrams Low frequency range Mercury electrodes PARTICLE ADHESION Pore models The effect of hematite particles adhesion on the electrochemical impedance of mercury electrodes was studied at different electrode potentials. The impedance decreases as the number of attached particles increases; this impedance decrease is related to strong adhesion of particles. The impedance diagrams show, in the low frequency range, the presence of a constant phase element (CPE), with an exponent of ca. 0.5. The experimental results are analyzed in terms of an equivalent circuit including the CPE. The magnitude of this CPE is directly related to the coverage of the electrode. A qualitative interpretation for this behavior, when an AC signal is applied, is proposed in terms of a pore model for the metal/hematite particles interphase. Fil:Molina, F.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01694243_v15_n12_p1503_Andrade http://hdl.handle.net/20.500.12110/paper_01694243_v15_n12_p1503_Andrade |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Electrochemical impedance Equivalent circuit Hematite Particle adhesion Pore model Colloids Computer simulation Electric impedance Electrochemical electrodes Equivalent circuits Mercury (metal) Particles (particulate matter) Electrodes Hematite Iron ores ELectrochemical impedance Hematite Adhesion AC signals Constant phase element Electrochemical impedance Electrode potentials Hematite particles Impedance diagrams Low frequency range Mercury electrodes PARTICLE ADHESION Pore models |
| spellingShingle |
Electrochemical impedance Equivalent circuit Hematite Particle adhesion Pore model Colloids Computer simulation Electric impedance Electrochemical electrodes Equivalent circuits Mercury (metal) Particles (particulate matter) Electrodes Hematite Iron ores ELectrochemical impedance Hematite Adhesion AC signals Constant phase element Electrochemical impedance Electrode potentials Hematite particles Impedance diagrams Low frequency range Mercury electrodes PARTICLE ADHESION Pore models Molina, Fernando Victor Electrochemical impedance of mercury electrodes with hematite particles adhered |
| topic_facet |
Electrochemical impedance Equivalent circuit Hematite Particle adhesion Pore model Colloids Computer simulation Electric impedance Electrochemical electrodes Equivalent circuits Mercury (metal) Particles (particulate matter) Electrodes Hematite Iron ores ELectrochemical impedance Hematite Adhesion AC signals Constant phase element Electrochemical impedance Electrode potentials Hematite particles Impedance diagrams Low frequency range Mercury electrodes PARTICLE ADHESION Pore models |
| description |
The effect of hematite particles adhesion on the electrochemical impedance of mercury electrodes was studied at different electrode potentials. The impedance decreases as the number of attached particles increases; this impedance decrease is related to strong adhesion of particles. The impedance diagrams show, in the low frequency range, the presence of a constant phase element (CPE), with an exponent of ca. 0.5. The experimental results are analyzed in terms of an equivalent circuit including the CPE. The magnitude of this CPE is directly related to the coverage of the electrode. A qualitative interpretation for this behavior, when an AC signal is applied, is proposed in terms of a pore model for the metal/hematite particles interphase. |
| author |
Molina, Fernando Victor |
| author_facet |
Molina, Fernando Victor |
| author_sort |
Molina, Fernando Victor |
| title |
Electrochemical impedance of mercury electrodes with hematite particles adhered |
| title_short |
Electrochemical impedance of mercury electrodes with hematite particles adhered |
| title_full |
Electrochemical impedance of mercury electrodes with hematite particles adhered |
| title_fullStr |
Electrochemical impedance of mercury electrodes with hematite particles adhered |
| title_full_unstemmed |
Electrochemical impedance of mercury electrodes with hematite particles adhered |
| title_sort |
electrochemical impedance of mercury electrodes with hematite particles adhered |
| publishDate |
2001 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01694243_v15_n12_p1503_Andrade http://hdl.handle.net/20.500.12110/paper_01694243_v15_n12_p1503_Andrade |
| work_keys_str_mv |
AT molinafernandovictor electrochemicalimpedanceofmercuryelectrodeswithhematiteparticlesadhered |
| _version_ |
1768546110870126592 |