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Title: Novel materials for solid oxide fuel cells cathodes and oxygen separation membranes: Fundamentals of oxygen transport and performance
Authors: Sadykov, V. A.
Sadovskaya, E. M.
Eremeev, N. F.
Yu. , Pikalova, E.
Bogdanovich, N. M.
Filonova, E. A.
Krieger, T. A.
Fedorova, Y. E.
Krasnov, A. V.
Skriabin, P. I.
Lukashevich, A. I.
Steinberger-Wilckens, R.
Vinke, I. C.
Issue Date: 2020
Publisher: KeAi Publishing Communications Ltd.
Citation: Novel materials for solid oxide fuel cells cathodes and oxygen separation membranes: Fundamentals of oxygen transport and performance / V. A. Sadykov, E. M. Sadovskaya, N. F. Eremeev, et al. — DOI 10.1016/j.crcon.2020.08.002 // Carbon Resources Conversion. — 2020. — Vol. 3. — P. 112-121.
Abstract: In the field of modern hydrogen energy, obtaining pure hydrogen and syngas and then being able to use them for green energy production are significant problems. Developing solid oxide fuel cells (SOFC) and catalytic membranes for oxygen separation as well as materials for these devices is one of the most likely ways to solve these problems. In this work, the authors’ recent studies in this field are reviewed; the fundamentals of developing materials for SOFC cathodes and oxygen separation membranes’ permselective layers based on research of their oxygen mobility and surface reactivity are presented. Ruddlesden – Popper phases Ln2–xCaxNiO4+δ (LnCNO) and perovskite-fluorite nanocomposites PrNi0.5Co0.5O3–δ–Ce0.9Y0.1O2–δ (PNC–YDC) were studied by isotope exchange of oxygen with C18O2 and 18O2 in flow and closed reactors. For LnCNO a high oxygen mobility was shown (D* ~ 10–7 cm2/s at 700 °C), being provided by the cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial oxygen. For PNC–YDC dominated a wide fast diffusion channel via fluorite phase and interphases due to features of the redistribution of cations resulting in superior oxygen mobility (D* ~ 10–8 cm2/s at 700 °C). After optimization of composition and nanodomain structure of these materials, as cathodes of SOFC they provided a high power density, while for asymmetric supported oxygen separation membranes – a high oxygen permeability. © 2020
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85101369075
PURE ID: 22094472
ISSN: 25889133
DOI: 10.1016/j.crcon.2020.08.002
metadata.dc.description.sponsorship: Support of different parts of the work by the Russian Science Foundation (Project 16-13-00112) and the budget project №AAAA-A17-117041110045-9 for Boreskov Institute of Catalysis is gratefully acknowledged. The authors from the Ural Federal University are grateful to the Government of the Russian Federation (Agreement 02.A03.21.0006, Act 211). Ce 0.9 Y 0.1 O 2–δ |Ce 0.9 Gd 0.1 O 2–δ |Ni/Zr 0.84 Y 0.16 O 2–δ anodic half-cells and Ni/Al foam substrates were kindly provided by H.C. Starck, Germany and Powder Metallurgy Institute NAN Belarus, respectively. Authors would like to appreciate International Conference on Advances in Energy Systems and Environmental Engineering (ASEE19, Wroclaw, Poland, June 9-12, 2019) Organization Committee.
RSCF project card: 16-13-00112
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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