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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01694243_v15_n12_p1503_Andrade |
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todo:paper_01694243_v15_n12_p1503_Andrade2023-10-03T15:07:05Z Electrochemical impedance of mercury electrodes with hematite particles adhered Andrade, E.M. Molina, F.V. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01694243_v15_n12_p1503_Andrade |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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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 Andrade, E.M. Molina, F.V. 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. |
| format |
JOUR |
| author |
Andrade, E.M. Molina, F.V. |
| author_facet |
Andrade, E.M. Molina, F.V. |
| author_sort |
Andrade, E.M. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_01694243_v15_n12_p1503_Andrade |
| work_keys_str_mv |
AT andradeem electrochemicalimpedanceofmercuryelectrodeswithhematiteparticlesadhered AT molinafv electrochemicalimpedanceofmercuryelectrodeswithhematiteparticlesadhered |
| _version_ |
1782026935333814272 |