Oxygen isotope exchange between the gas-phase and the electrochemical cell O-2, Pt | YSZ | Pt, O-2 under conditions of applied potential difference / Khodimchuk A. V.,Anan'ev M. V.,Eremin V. A.,Tropin E. S.,Farlenkov A. S.,Porotnikova N. M.,Kurumchin E. Kh.,Bronin D. I. // RUSSIAN JOURNAL OF ELECTROCHEMISTRY. - 2017. - V. 53, l. 8. - P. 838-845.

ISSN/EISSN:

1023-1935 / 1608-3342

Type:

Article

Abstract:

The kinetics of oxygen isotope exchange between gas-phase oxygen and the electrochemical cell O-2, Pt | ZrO2 + 10 mol \% Y2O3 (YSZ) | Pt, O-2 with applied potential difference (Delta U = +/- 1.2 V) is studied in the temperature range of 600-800A degrees D and the oxygen pressure interval of 3-13 kPa. An original design of a vacuum electrochemical cell with the separated gas space is put forward for studying how the potential difference on the electrochemical cell influences the kinetics of interaction of gas-phase oxygen with the gas electrode O-2, Pt | YSZ in the electrochemical cell. It is shown that the oxygen interphase exchange rate is the higher the more negative the charge on the electrode studied; moreover, the mechanism of gas-phase oxygen exchange with the gas electrode O-2, Pt | YSZ in the electrochemical cell depends fundamentally on the electrode charge sign. The possible reasons for the revealed differences are discussed; the corresponding models are proposed.

Author keywords:

oxygen isotope exchange; potential difference; electrochemical cell; oxygen exchange coefficient; rate-determining stage; dissociative adsorption; incorporation PT,O-2(G)/STABILIZED ZIRCONIA INTERFACES; ELECTRODE RESISTANCE; PLATINUM-ELECTRODES; CEO2 ELECTROLYTES; SUBSTITUTED ZRO2; POLARIZATION; REDUCTION; BI2O3

DOI:

10.1134/S1023193517080109

Web of Science ID:

ISI:000409010200007

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	AUG
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1608-3342
Keywords-Plus	PT,O-2(G)/STABILIZED ZIRCONIA INTERFACES; ELECTRODE RESISTANCE; PLATINUM-ELECTRODES; CEO2 ELECTROLYTES; SUBSTITUTED ZRO2; POLARIZATION; REDUCTION; BI2O3
Research-Areas	Electrochemistry
Web-of-Science-Categories	Electrochemistry
Author-Email	annakhodimcuk@gmail.com
Funding-Acknowledgement	Russian Foundation for Basic Research {[}14-29-04009]; act 211 of the Government of the Russian Federation {[}02.A03.21.0006]; stipendium of the President of the Russian Federation
Funding-Text	This study was partly supported by the Russian Foundation for Basic Research (project no. 14-29-04009), act 211 of the Government of the Russian Federation no. 02.A03.21.0006, and stipendium of the President of the Russian Federation of 2015-2017. In carrying out our investigations, we used the equipment of the Center of Collective Use ``Composition of Matter{''} at the Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences.
Number-of-Cited-References	28
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	4
Journal-ISO	Russ. J. Electrochem.
Doc-Delivery-Number	FF5GR