Mutual electrosurface transfer and phase formation at the MeWO4|WO3 (Me = Ca, Sr, Ba) interface: Electron microscopy data / Neiman A. Ya.,Tsipis E. V.,Kolosov V. Yu.,Pestereva N. N.,Elizarova E. A.,Chapon P.,Nekhin M. Yu. // JOURNAL OF SURFACE INVESTIGATION-X-RAY SYNCHROTRON AND NEUTRON TECHNIQUES. - 2011. - V. 5, l. 5. - P. 979-985.

ISSN/EISSN:

1027-4510 / нет данных

Type:

Article

Abstract:

Experiments on solid-phase electrosurface migration through formally inert eutectic WO3|MeWO4 interfaces in symmetric electrochemical cells such as Pt|WO3|MeWO4|WO3|Pt are performed. It is shown that the most significant changes occur at the ``cathode{''} interface (-)Pt|WO3|MeWO4|, where counter electrosurface drawing of WO3 to the inner surface of MeWO4 ceramics (with the formation of two-phase distributed composite WO3|MeWO4) and a much smaller flow of Me2+ components to the WO3 ceramics depth are observed. Scanning and transmission electron microscopy showed the formation of nano- and microscale objects of various shape in grain boundaries' regions, among which well-faceted nanoobjects shaped as ribbons and rods from a few to hundreds of nanometers thick are noticeable. The Ca and Sr contents in WO (3) ((-)) cathode pellets after experiments in cells are determined by X-ray fluorescence analysis, scanning electron microscopy, energy-dispersive analysis, and depth profiling using glow-discharge spectrometry. The data obtained are interpreted based on the concepts of solid-phase electrocapillarity (WO3 migration) and electrochemical intercalation of Me into the WO3 structure.

Author keywords:

SURFACE

DOI:

10.1134/S1027451011100156

Web of Science ID:

ISI:000295682800024

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	SURFACE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	Arkady.Neiman@usu.ru
ResearcherID-Numbers	Grupo, AE/B-3302-2014 Tsipis, Ekaterina/A-3590-2015
ORCID-Numbers	Grupo, AE/0000-0002-0913-4772
Funding-Acknowledgement	Russian Foundation for Basic Research {[}08-03-00144-a]; Ministry of Education and Science of the Russian Federation; federal targeted program ``Scientific and Pedagogical Personnel of Innovative Russia{''}
Funding-Text	This study was supported by the Russian Foundation for Basic Research (project no. 08-03-00144-a), the Ministry of Education and Science of the Russian Federation, and the federal targeted programs ``Scientific and Pedagogical Personnel of Innovative Russia for 2009-2013{''} and ``Development of the Scientific Potential of Higher Schools for 2009-2010.{''}
Number-of-Cited-References	11
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	14
Journal-ISO	J. Surf. Ingestig.-X-Ray Synchro.
Doc-Delivery-Number	830UN