Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Doped (Nd,Ba)FeO3 oxides as potential electrodes for symmetrically designed protonic ceramic electrochemical cells. / Tarutina, Liana R.; Lyagaeva, Julia G.; Farlenkov, Andrei S.; Vylkov, Alexey I.; Vdovin, Gennady K.; Murashkina, Anna A.; Demin, Anatoly K.; Medvedev, Dmitry A.
в: Journal of Solid State Electrochemistry, Том 24, № 7, 01.07.2020, стр. 1453-1462.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Doped (Nd,Ba)FeO3 oxides as potential electrodes for symmetrically designed protonic ceramic electrochemical cells
AU - Tarutina, Liana R.
AU - Lyagaeva, Julia G.
AU - Farlenkov, Andrei S.
AU - Vylkov, Alexey I.
AU - Vdovin, Gennady K.
AU - Murashkina, Anna A.
AU - Demin, Anatoly K.
AU - Medvedev, Dmitry A.
N1 - Publisher Copyright: © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - The design of new electrode materials with high redox stability has great potential for the fabrication of solid oxide fuel and electrolysis cells having a symmetrical configuration; such a configuration is particularly promising in terms of economic and technological factors due to involving a reduced number of functional materials and technological steps. Under the framework of the present study, we developed new Nd1–xBaxFe0.9M0.1O3–δ materials (where M = Cu or Ni, x = 0.4 or 0.6), characterizing their functional properties (oxygen non-stoichiometry, thermomechanical and electrical properties) under both oxidizing and reducing conditions, as well as demonstrating the principal capability of their application as symmetrical electrodes in proton-conducting electrochemical cells. The obtained results demonstrate the desirability of a low barium content due to decreased thermal expansion coefficients and chemical strain contribution and Cu-doping due to the formation of an electrochemically active scaffold having nano-sized sediments. The Nd0.6Ba0.4Fe0.9Cu0.1O3–δ electrodes fabricated onto the BaCe0.5Zr0.3Y0.1Yb0.1O3–δ proton-conducting electrolytes exhibit polarization resistances of 1.1 and 15.1 Ω cm2 at 600 °C in wet air and wet hydrogen measuring atmospheres, respectively. These reported results are among the first concerning the effective operation of symmetrical electrodes in systems with proton-conducting electrolytes. [Figure not available: see fulltext.].
AB - The design of new electrode materials with high redox stability has great potential for the fabrication of solid oxide fuel and electrolysis cells having a symmetrical configuration; such a configuration is particularly promising in terms of economic and technological factors due to involving a reduced number of functional materials and technological steps. Under the framework of the present study, we developed new Nd1–xBaxFe0.9M0.1O3–δ materials (where M = Cu or Ni, x = 0.4 or 0.6), characterizing their functional properties (oxygen non-stoichiometry, thermomechanical and electrical properties) under both oxidizing and reducing conditions, as well as demonstrating the principal capability of their application as symmetrical electrodes in proton-conducting electrochemical cells. The obtained results demonstrate the desirability of a low barium content due to decreased thermal expansion coefficients and chemical strain contribution and Cu-doping due to the formation of an electrochemically active scaffold having nano-sized sediments. The Nd0.6Ba0.4Fe0.9Cu0.1O3–δ electrodes fabricated onto the BaCe0.5Zr0.3Y0.1Yb0.1O3–δ proton-conducting electrolytes exhibit polarization resistances of 1.1 and 15.1 Ω cm2 at 600 °C in wet air and wet hydrogen measuring atmospheres, respectively. These reported results are among the first concerning the effective operation of symmetrical electrodes in systems with proton-conducting electrolytes. [Figure not available: see fulltext.].
KW - BaCeO
KW - BaZrO
KW - Perovskite
KW - Proton-conducting materials
KW - SOFCs & SOECs
KW - Symmetrical electrodes
UR - http://www.scopus.com/inward/record.url?scp=85079702957&partnerID=8YFLogxK
U2 - 10.1007/s10008-020-04522-4
DO - 10.1007/s10008-020-04522-4
M3 - Article
VL - 24
SP - 1453
EP - 1462
JO - Journal of Solid State Electrochemistry
JF - Journal of Solid State Electrochemistry
SN - 1432-8488
IS - 7
ER -
ID: 78416517