Design of Materials for Solid Oxide Fuel Cells Cathodes and Oxygen Separation Membranes Based on Fundamental Studies of Their Oxygen Mobility and Surface Reactivity | Sciact - CRIS-system of Boreskov Institute of Catalysis

Design of Materials for Solid Oxide Fuel Cells Cathodes and Oxygen Separation Membranes Based on Fundamental Studies of Their Oxygen Mobility and Surface Reactivity Full article

Conference

International Conference on Advances in Energy Systems and Environmental Engineering
09-12 Jun 2019 , Wroclaw

Journal

E3S Web of Conferences
, E-ISSN: 2267-1242

Output data

Year: 2019, Volume: 116, Article number : 00068, Pages count : 9 DOI: 10.1051/e3sconf/201911600068

Tags

Cathodes; Cerium compounds; Cobalt compounds; Environmental engineering; Fluorspar; Membranes; Nanocomposites; Nickel compounds; Oxygen; Perovskite; Positive ions; Praseodymium compounds

Authors

Sadykov Vladislav ^1,2 , Sadovskaya Ekaterina ^1,2 , Eremeev Nikita ¹ , Pikalova Elena ^3,4 , Bogdanovich Nina ³ , Filonova Elena ⁴ , Fedorova Yulia ¹ , Krasnov Alexey ¹ , Skriabin Pavel ¹ , Lukashevich Anton ¹

Affiliations

1	Boreskov Institute of Catalysis, SB RAS, Novosibirsk, 630090, Russian Federation
2	Novosibirsk State University, Novosibirsk, 630090, Russian Federation
3	Institute of High Temperature Electrochemistry, UB RAS, Yekaterinburg, 620137, Russian Federation
4	Ural Federal University, Yekaterinburg, 620002, Russian Federation

Funding (2)

1	Russian Science Foundation	16-13-00112
2	The Ministry of Education and Science of the Russian Federation	02.A03.21.0006

Design of materials for solid oxide fuel cells cathodes and oxygen separation membranes and studying their oxygen transport characteristics are important problems of modern hydrogen energy. In the current work, fundamentals of such materials design based on characterization of their oxygen mobility by oxygen isotope exchange with C18O2 and 18O2 in flow and closed reactors for samples of Ruddlesden - Popper-type oxides Ln2-xCaxNiO4+δ, perovskite-fluorite nanocomposites PrNi0.5Co0.5O3-δ - Ce0.9Y0.1O2-δ, etc. are presented. Fast oxygen transport was demonstrated for PNC - YDC (DO ~10-8 cm2/s at 700°C) nanocomposites due to domination of the fast diffusion channel involving oxygen of the fluorite phase with incorporated Pr cations and developed perovskite-fluorite interfaces. For LnCNO materials a high oxygen mobility (DO ~10-7 cm2/s at 700°C) provided by the cooperative mechanism of its migration was demonstrated. Depending on Ca dopant content and Ln cation nature, in some cases 1-2 additional channels of the slow diffusion appear due to decreasing the interstitial oxygen content and increasing the energy barrier for oxygen jumps due to cationic size effect. Optimized by the chemical composition and nanodomain structure materials of these types demonstrated a high performance as SOFC cathodes and functional layers in asymmetric supported oxygen separation membranes. © The Authors, published by EDP Sciences, 2019.

Sadykov V. , Sadovskaya E. , Eremeev N. , Pikalova E. , Bogdanovich N. , Filonova E. , Fedorova Y. , Krasnov A. , Skriabin P. , Lukashevich A.
Design of Materials for Solid Oxide Fuel Cells Cathodes and Oxygen Separation Membranes Based on Fundamental Studies of Their Oxygen Mobility and Surface Reactivity

E3S Web of Conferences. 2019. V.116. 00068 :1-9. DOI: 10.1051/e3sconf/201911600068 Scopus РИНЦ AN OpenAlex

Full text from publisher

Published print:	Sep 24, 2019
Published online:	Sep 24, 2019

Scopus:	2-s2.0-85072797521
Elibrary:	41700291
Chemical Abstracts:	2020:505776
OpenAlex:	W2976799662

DB	Citing
Scopus	2
Elibrary	1
OpenAlex	1