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López-Sauri DA, Veleva L, Pérez-Ángel G. Potentiostatic current and galvanostatic potential oscillations during electrodeposition of cadmium. Phys Chem Chem Phys 2015; 17:22266-71. [PMID: 26243301 DOI: 10.1039/c5cp03253a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cathodic current and potential oscillations were observed during electrodeposition of cadmium from a cyanide electrolyte on a vertical platinum electrode, in potentiostatic and galvanostatic experiments. Electrochemical impedance spectroscopy experiments revealed a region of negative real impedance in a range of non-zero frequencies, in the second descending branch with a positive slope of the N-shape current-potential curve. This kind of dynamical behaviour is characteristic of the HN-NDR oscillators (oscillators with the N-Shape current-potential curve and hidden negative differential resistance). The oscillations could be mainly attributed to the changes in the real active cathodic area, due to the adsorption of hydrogen molecules and their detachment from the surface. The instabilities of the electrochemical processes were characterized by time series, Fast Fourier Transforms and 2-D phase portraits showing quasi-periodic oscillations.
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Affiliation(s)
- D A López-Sauri
- Departamento de Física Aplicada, Centro de Investigación y de Estudios Avanzados (CINVESTAV-IPN), Carrt. Ant. A Progreso km. 6, CORDEMEX, 97310, Mérida, Yucatán, Mexico.
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Pototskaya VV, Gichan OI. On stability of model electrocatalytic process with frumkin adsorption isotherm occurring on spherical electrode. RUSS J ELECTROCHEM+ 2012. [DOI: 10.1134/s1023193512020140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li ZL, Ren B, Niu ZJ, Xiao XM, Zeng Y, Tian ZQ. On the Criteria of Instability for Electrochemical Systems. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20020200707] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Jiang XC, Chen S, Li ZL. Two Types of Potential Oscillation During the Reduction of Dichromate on Gold Electrode in H 2SO 4Solution. CHINESE J CHEM PHYS 2006. [DOI: 10.1360/cjcp2006.19(3).214.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Li Z, Niu Z, Wu T, Nie H, Xiao X. In situ monitoring of potential oscillations in the reduction of IO3− by electrochemical quartz crystal microbalance. Electrochem commun 2003. [DOI: 10.1016/s1388-2481(03)00051-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Li ZL, Ren B, Xiao XM, Zeng Y, Chu X, Tian ZQ. Further Insight into the Origin of Potential Oscillations during the Iodate Reduction in Alkaline Solution with Mass Transfer. J Phys Chem A 2002. [DOI: 10.1021/jp014143z] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Z. L. Li
- Institute of Physical Chemistry and Department of Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 China, State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005 China, and Department of Chemistry, Hunan Normal University, Changsha 410081 China
| | - B. Ren
- Institute of Physical Chemistry and Department of Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 China, State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005 China, and Department of Chemistry, Hunan Normal University, Changsha 410081 China
| | - X. M. Xiao
- Institute of Physical Chemistry and Department of Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 China, State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005 China, and Department of Chemistry, Hunan Normal University, Changsha 410081 China
| | - Y. Zeng
- Institute of Physical Chemistry and Department of Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 China, State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005 China, and Department of Chemistry, Hunan Normal University, Changsha 410081 China
| | - X. Chu
- Institute of Physical Chemistry and Department of Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 China, State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005 China, and Department of Chemistry, Hunan Normal University, Changsha 410081 China
| | - Z. Q. Tian
- Institute of Physical Chemistry and Department of Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004 China, State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005 China, and Department of Chemistry, Hunan Normal University, Changsha 410081 China
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