Electrochemical impedance spectroscopy of a free-standing oxide film

Memet, Jean-Bernard; Girault, P.; Sabot, R.; Compère, Chantal; Deslouis, C.

doi:10.1016/s0013-4686(01)00816-7

Cited by 20 publications

(21 citation statements)

References 8 publications

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“…The spectra are analogous to those published earlier for Fe-Cr alloys at 200°C [36] and for polythiophene derivatives in the reduced state [23]. Spectra of a broadly analogous shape have been measured for other electroactive polymers in that configuration [24,25] and also for free-standing oxide films (symmetrical configuration electrolyte/film/ electrolyte [15]). Qualitatively similar spectra were obtained for the Mo-containing alloys and comparisons of spectra at 200 and 300°C, )0.18 V are presented in Figs.…”

Section: Impedance Measurements In the Asymmetrical Configurationsupporting

confidence: 79%

“…An alternative that has been developed extensively in the laboratory directed by M. Keddam was to introduce impedance measurements in different configurations in order to unravel the respective contributions of the bulk transport and interfacial transfer processes in the overall impedance response of electroactive polymer films [13,14] and oxide films [15]. Using a combination between an asymmetrical (metal/film/electrolyte, containing or not containing an electroactive species) and symmetrical (electrolyte/film/electrolyte, free-standing membrane) measurement configurations in otherwise identical conditions led to a significant decrease of the number of fitting parameters needed to reproduce an individual impedance spectrum.…”

Section: Introductionmentioning

confidence: 99%

“…Using a combination between an asymmetrical (metal/film/electrolyte, containing or not containing an electroactive species) and symmetrical (electrolyte/film/electrolyte, free-standing membrane) measurement configurations in otherwise identical conditions led to a significant decrease of the number of fitting parameters needed to reproduce an individual impedance spectrum. Thus an increase in the statistical significance of parameter values extracted from impedance measurements has been achieved [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Conduction mechanism in oxide films on ferrous alloys studied by impedance spectroscopy in symmetrical and asymmetrical configurations

Betova

Bojinov

Kinnunen

et al. 2004

Journal of Electroanalytical Chemistry

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Section: Impedance Measurements In the Asymmetrical Configurationsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Conduction mechanism in oxide films on ferrous alloys studied by impedance spectroscopy in symmetrical and asymmetrical configurations

Betova

Bojinov

Kinnunen

et al. 2004

Journal of Electroanalytical Chemistry

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“…An alternative that has been extensively developed is introducing impedance measurements in different configurations to determine the respective contributions of the bulk transport and interfacial transfer processes in the overall impedance response of thin films [23][24][25]. This approach was extended for supercritical temperatures in the present NERI project [3,4].…”

Section: Symmetrical and Asymmetrical Configurations For In Situ Studmentioning

confidence: 99%

“…Thus, an increase in the statistical significance of parameter values extracted from impedance measurements was achieved [23][24][25].…”

Section: Symmetrical and Asymmetrical Configurations For In Situ Studmentioning

confidence: 99%

Fundamental Understanding of Crack Growth in Structural Components of Generation IV Supercritical Light Water Reactors

Balachov¹,

Kobayashi²,

Tanzella³

et al. 2004

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REPORT DOCUMENTATION PAGEForm Approved OMB NO. Public Reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comment regarding this burden estimates or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and This work contributes to the design of safe and economical Generation-IV Super-Critical Water Reactors (SCWRs) by providing a basis for selecting structural materials to ensure the functionality of in-vessel components during the entire service life. During the second year of the project, we completed electrochemical characterization of the oxide film properties and investigation of crack initiation and propagation for candidate structural materials steels under supercritical conditions. We ranked candidate alloys against their susceptibility to environmentally assisted degradation based on the in situ data measured with an SRI-designed controlled distance electrochemistry (CDE) arrangement. A correlation between measurable oxide film properties and susceptibility of austenitic steels to environmentally assisted degradation was observed experimentally. One of the major practical results of the present work is the experimentally proven ability of the economical CDE technique to supply in situ data for ranking candidate structural materials for Generation-IV SCWRs. A potential use of the CDE arrangement developed at SRI for building in situ sensors for monitoring water chemistry in the heat transport circuit of Generation-IV SCWRs was evaluated and proved to be feasible. Understanding basic phenomena. Kinetic parameters of the charge and mass transport processes in the metal/oxide film/supercritical water system are derived from in situ oxide film studies to understand and quantify the rate-controlling processes and, eventually, the fundamentals of the metal oxidation phenomenon at supercritical temperatures. Providing a basis for the development of new alloys. Integration of the in situexperimental information on oxide film resistance to charge and mass transport for alloys of various compositions, along with fracture surface analysis and current theoretical understanding of the relationship between properties of the oxide films and stability of materials, is expected to aid in material selection and the development process. It will do so by providing recommendations for chemical compositions of the alloys in regard to their expected locations in the reactor (or more specifically, in regard to local temperature and oxidizing conditions). 1 WORK PERFORMED AND PRELIMINARY RESULTSDuring this project, SRI completed the electrochemical characterization of the oxide film prop...

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Electricity generation by splitting of water from hydroelectric cell: An alternative to solar cell and fuel cell

et al. 2020

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Harnessing green electricity by hydroelectric cell from water molecule splitting based on uniquely processed ferrites, multiferroic, composites and metal oxides has astonished the world. The specially processed oxygen deficient Nano porous ferrite/metal oxide attached with two dissimilar electrodes known as hydroelectric cell to generate electricity using a few drops of water for the first time it was invented in 2016. It is a primary source of energy that operates on the principle of spontaneous water molecule dissociation (OH − and H 3 O +) by oxygen deficient and Nano porous materials such as Mg 0.

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Electrochemical impedance spectroscopy of a free-standing oxide film

Cited by 20 publications

References 8 publications

Conduction mechanism in oxide films on ferrous alloys studied by impedance spectroscopy in symmetrical and asymmetrical configurations

Conduction mechanism in oxide films on ferrous alloys studied by impedance spectroscopy in symmetrical and asymmetrical configurations

Fundamental Understanding of Crack Growth in Structural Components of Generation IV Supercritical Light Water Reactors

Electricity generation by splitting of water from hydroelectric cell: An alternative to solar cell and fuel cell

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