Transport properties of SrMoO4/MoO3 composites / Koteneva E. A.,Pestereva N. N.,Astapova D. V.,Neiman A. Ya.,Animitsa I. E. // RUSSIAN JOURNAL OF ELECTROCHEMISTRY. - 2017. - V. 53, l. 2. - P. 187-195.

ISSN/EISSN:

1023-1935 / 1608-3342

Type:

Article

Abstract:

The work is devoted to the study of transport properties at the SrMoO4/MoO3 interface and examination of composite phases based on these compounds. The mass transfer in the (aEuro')MoO3/SrMoO4/MoO3(+) cell is studied in the spontaneous mode (with no polarization) and electric field-induced mode. In the spontaneous mode, MoO3 is drawn onto the inner surface of SrMoO4 ceramic briquette. Under a polarization, molybdenyl ion \{MoO2\}(2+) is one of the charge carriers, which is evidenced by the Tubandt method. Thus, both spontaneously and under an external polarization, MoO3 is transferred onto the inner surface of SrMoO4 ceramics. It is found that the ionic transfer prevails for SrMoO4: the average transport numbers by the emf method are close to unity, the oxygen activity in the gas phase (in the range 0.21aEuro broken vertical bar 10(-5) atm) has no effect on the conductivity. The composites \{SrMoO4-xMoO(3)\} (where x = 1, 5, 10, 15, 20 mol \%) are fabricated; the presence of two phases is evidenced by the X-ray diffraction analysis. The temperature dependence of the total conductivity is determined. In the range of small MoO3 additions to SrMoO4, the conductivity steeply increases revealing the similarity to the \{MeWO4-xWO(3) (Me-Ca, Sr, Ba)\} composites.

Author keywords:

molybdenum oxide MoO3; strontium molybdate SrMoO4; metacomposite; conductivity; transport numbers ME; SR; BA; CONDUCTION; MIGRATION; DIFFUSION; NUMBERS; WO3; CA

DOI:

10.1134/S1023193517020094

Web of Science ID:

ISI:000396075900010

Соавторы в МНС:

Другие поля

Поле	Значение
Month	FEB
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1608-3342
Keywords-Plus	ME; SR; BA; CONDUCTION; MIGRATION; DIFFUSION; NUMBERS; WO3; CA
Research-Areas	Electrochemistry
Web-of-Science-Categories	Electrochemistry
Author-Email	Elena.Kotenyova@urfu.ru
ResearcherID-Numbers	Пестерева, Наталья/S-8218-2017
Funding-Acknowledgement	Russian Foundation for Basic Research {[}13-03-96114\_Ural, 14-03-00804\_a]
Funding-Text	This work was performed within the State Task of Ministry of Education and Science of Russia and supported by the Russian Foundation for Basic Research, projects nos. 13-03-96114\_Ural and 14-03-00804\_a.
Number-of-Cited-References	8
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	6
Journal-ISO	Russ. J. Electrochem.
Doc-Delivery-Number	EN5WG