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  The impedance behavior of the cell Au/HClO4 · 5.5 H2O/Au in the temperature range 4.2–300 K

Cappadonia, M., & Stimming, U. (1991). The impedance behavior of the cell Au/HClO4 · 5.5 H2O/Au in the temperature range 4.2–300 K. Journal of Electroanalytical Chemistry, 300(1-2), 235-248. doi:10.1016/0022-0728(91)85397-8.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0009-EACA-C Versions-Permalink: https://hdl.handle.net/21.11116/0000-0009-FEB7-B
Genre: Zeitschriftenartikel

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 Urheber:
Cappadonia, Marcella1, Autor           
Stimming, Ulrich1, 2, Autor           
Affiliations:
1Fritz Haber Institute, Max Planck Society, ou_24021              
2Departement of Chemical Engineering and Applied Chemistry, Columbia University, New York, NY 10027,USA , ou_persistent22              

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 Zusammenfassung: The impedance of the cell Au/HClO4-5.5 H2O/Au was investigated in the frequency range 1 to 105 Hz between 4.2 and 300 K. The analysis of the data enables an evaluation of important electrolyte properties such as conductivity and dielectric constant in a wide range of temperatures, predominantly in the solid state of the electrolyte HClO4-5.5 H2O (Tf = 228 K). The double layer capacity of the gold electrodes was also determined; it shows a qualitatively similar result compared with previous measurements. In the solid state, the ionic conductivity exhibits two distinct activation energies of 0.37 and 0.54 eV corresponding to the two phases present in HClO4-5.5 H2O above and below 170 K. Below 120 K the activation energy becomes very small and tends to zero around 80 K indicating possible tunneling processes in the rigid H2O structure. At about the same temperature the dielectric constant reaches its low temperature limit with a value ϵ∞ ≈ 11 which is considerably higher than the value of pure ice of ϵ∞ ≈ 3.

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Sprache(n): eng - English
 Datum: 1990-08-131990-07-171991-02-11
 Publikationsstatus: Erschienen
 Seiten: 14
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/0022-0728(91)85397-8
 Art des Abschluß: -

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Titel: Journal of Electroanalytical Chemistry
  Andere : J. Electroanal. Chem.
  Andere : Journal of Electroanalytical Chemistry and Interfacial Electrochemistry
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : Elsevier
Seiten: 14 Band / Heft: 300 (1-2) Artikelnummer: - Start- / Endseite: 235 - 248 Identifikator: ISSN: 0022-0728
CoNE: https://pure.mpg.de/cone/journals/resource/954928572675