Structural and Transport Properties of Doped LAMOX — Electrolytes for IT SOFC | Sciact - CRIS-system of Boreskov Institute of Catalysis

Structural and Transport Properties of Doped LAMOX — Electrolytes for IT SOFC Full article

Conference

20th International Conference on Solid State Ionics (SSI-20)
14-19 Jun 2015 , Keystone

Journal

Solid State Ionics
ISSN: 0167-2738

Output data

Year: 2016, Volume: 288, Pages: 103-109 Pages count : 7 DOI: 10.1016/j.ssi.2016.01.026

Tags

Ionic conductivity, LAMOX, Oxygen diffusion, Synthesis

Authors

Pavlova S. ¹ , Bespalko Y. ¹ , Sadykov V. ^1,2 , Eremeev N. ¹ , Krieger T. ^1,2 , Sadovskaya E. ^1,2 , Ishchenko A. ^1,2 , Bobin A. ^1,2 , Uvarov N. ³ , Smirnova A. ⁴

Affiliations

1	Boreskov Institute of Catalysis, Prosp. Acad. Lavrentieva, 5, 630090, Novosibirsk, Russian Federation
2	Novosibirsk State University, Novosibirsk, Russian Federation
3	Institute of Solid State Chemistry SB RAS, Novosibirsk, Russian Federation
4	South Dakota School of Mines and Technology, Rapid City, SD 57701, USA

Funding (2)

1	Russian Science Foundation	16-13-00112
2	American Chemical Society	12658

Doped La2 − xRxMo2 − yWyO9 (R = Bi, Gd, Pr, Sm, Nd; x = 0–0.5, y = 0.5–1) were synthesized via polymerized precursors method or high power mechanical milling (MM). The study of doped LAMOX genesis and structural properties using thermal analysis, XRD, TEM has revealed that for all cations substituting La-position, the pure cubic β-phase is formed from polymerized precursors after calcination at 700 °C. W-doped LAMOX have been obtained via low temperature calcination of MM products. Due to a high dispersion of powders, high density pellets of doped LAMOX ceramics have been already obtained after sintering at 950 °C. Their electrical conductivity measured by impedance spectroscopy varies in the range of 2.3–5.6 · 10− 3 S/cm at 630 °C depending on the doping cation nature. The self-diffusion coefficient (DO) values calculated from corresponding conductivities is in the range of 6–14 · 10− 9 cm2/s at 630 °C agreeing well with those from the data of C18O2 SSITKA for oxygen isotope exchange with powders of LAMOX.

Pavlova S. , Bespalko Y. , Sadykov V. , Eremeev N. , Krieger T. , Sadovskaya E. , Ishchenko A. , Bobin A. , Uvarov N. , Smirnova A.
Structural and Transport Properties of Doped LAMOX — Electrolytes for IT SOFC
Solid State Ionics. 2016. V.288. P.103-109. DOI: 10.1016/j.ssi.2016.01.026 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jul 17, 2015
Accepted:	Jan 6, 2016
Published online:	Feb 2, 2016
Published print:	May 1, 2016

Web of science:	WOS:000376710900020
Scopus:	2-s2.0-84956654804
Elibrary:	35473521
Chemical Abstracts:	2016:110614
OpenAlex:	W2272325611

DB	Citing
Web of science	16
Scopus	17
Elibrary	18
OpenAlex	16