Standard

Oxide ionic transport features in Gd-doped La nickelates. / Sadykov, Vladislav A.; Sadovskaya, Ekaterina M.; Filonova, Elena A. et al.

In: Solid State Ionics, Vol. 357, 115462, 01.12.2020.

Research output: Contribution to journal › Article › peer-review

Harvard

Sadykov, VA, Sadovskaya, EM, Filonova, EA, Eremeev, NF, Belyaev, VD, Tsvinkinberg, VA & Pikalova, EY 2020, 'Oxide ionic transport features in Gd-doped La nickelates', Solid State Ionics, vol. 357, 115462. https://doi.org/10.1016/j.ssi.2020.115462

APA

Sadykov, V. A., Sadovskaya, E. M., Filonova, E. A., Eremeev, N. F., Belyaev, V. D., Tsvinkinberg, V. A., & Pikalova, E. Y. (2020). Oxide ionic transport features in Gd-doped La nickelates. Solid State Ionics, 357, [115462]. https://doi.org/10.1016/j.ssi.2020.115462

Vancouver

Sadykov VA, Sadovskaya EM, Filonova EA, Eremeev NF, Belyaev VD, Tsvinkinberg VA et al. Oxide ionic transport features in Gd-doped La nickelates. Solid State Ionics. 2020 Dec 1;357:115462. doi: 10.1016/j.ssi.2020.115462

Author

Sadykov, Vladislav A. ; Sadovskaya, Ekaterina M. ; Filonova, Elena A. et al. / Oxide ionic transport features in Gd-doped La nickelates. In: Solid State Ionics. 2020 ; Vol. 357.

BibTeX

@article{64ff665728b8480093927e3ebbb13574,
title = "Oxide ionic transport features in Gd-doped La nickelates",
abstract = "In this work new RP materials of the La2-xGdxNiO4+δ series were synthesized and their structural features, oxygen stoichiometry and transport properties were studied by X-ray diffraction, TGA, mass relaxation method and oxygen isotope exchange with C18O2 in a flow reactor. According to XRD data, La2-xGdxNiO4+δ (x = 0.0; 0.2; 0.4) are single-phase samples with a tetragonal structure. Doping with Gd resulted only in the insignificant increase of the interstitial oxygen content (δ changes in the range of 0.13–0.15). A high oxygen mobility was demonstrated: at 700 °C Dchem ~ 10−5 cm2/s (mass relaxation data) and self–diffusion coefficient D⁎ ~ 10−8 cm2/s (oxygen isotope exchange data). Such characteristics are determined by the cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial oxygen. Gd doping, however, resulted in non-uniformity of the oxygen migration routes. To describe this feature, a mathematical model has been developed including a slow exchange between neighboring oxide anions. Oxygen mobility decreases with increasing Gd content.",
keywords = "Chemical diffusion, Mass relaxation, Oxygen isotope exchange, Oxygen mobility and surface reactivity, Ruddlesden – Popper phases, Structure evolution, SURFACE EXCHANGE, STABILITY, DEFECT, FUEL-CELLS, MASS-TRANSPORT, INTERSTITIAL OXYGEN, CATHODE, Ruddlesden - Popper phases, OXYGEN-EXCHANGE KINETICS, DIFFUSION, ELECTROCHEMICAL PERFORMANCE",
author = "Sadykov, {Vladislav A.} and Sadovskaya, {Ekaterina M.} and Filonova, {Elena A.} and Eremeev, {Nikita F.} and Belyaev, {Vladimir D.} and Tsvinkinberg, {Viktor A.} and Pikalova, {Elena Yu}",
year = "2020",
month = dec,
day = "1",
doi = "10.1016/j.ssi.2020.115462",
language = "English",
volume = "357",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Oxide ionic transport features in Gd-doped La nickelates

AU - Sadykov, Vladislav A.

AU - Sadovskaya, Ekaterina M.

AU - Filonova, Elena A.

AU - Eremeev, Nikita F.

AU - Belyaev, Vladimir D.

AU - Tsvinkinberg, Viktor A.

AU - Pikalova, Elena Yu

PY - 2020/12/1

Y1 - 2020/12/1

N2 - In this work new RP materials of the La2-xGdxNiO4+δ series were synthesized and their structural features, oxygen stoichiometry and transport properties were studied by X-ray diffraction, TGA, mass relaxation method and oxygen isotope exchange with C18O2 in a flow reactor. According to XRD data, La2-xGdxNiO4+δ (x = 0.0; 0.2; 0.4) are single-phase samples with a tetragonal structure. Doping with Gd resulted only in the insignificant increase of the interstitial oxygen content (δ changes in the range of 0.13–0.15). A high oxygen mobility was demonstrated: at 700 °C Dchem ~ 10−5 cm2/s (mass relaxation data) and self–diffusion coefficient D⁎ ~ 10−8 cm2/s (oxygen isotope exchange data). Such characteristics are determined by the cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial oxygen. Gd doping, however, resulted in non-uniformity of the oxygen migration routes. To describe this feature, a mathematical model has been developed including a slow exchange between neighboring oxide anions. Oxygen mobility decreases with increasing Gd content.

AB - In this work new RP materials of the La2-xGdxNiO4+δ series were synthesized and their structural features, oxygen stoichiometry and transport properties were studied by X-ray diffraction, TGA, mass relaxation method and oxygen isotope exchange with C18O2 in a flow reactor. According to XRD data, La2-xGdxNiO4+δ (x = 0.0; 0.2; 0.4) are single-phase samples with a tetragonal structure. Doping with Gd resulted only in the insignificant increase of the interstitial oxygen content (δ changes in the range of 0.13–0.15). A high oxygen mobility was demonstrated: at 700 °C Dchem ~ 10−5 cm2/s (mass relaxation data) and self–diffusion coefficient D⁎ ~ 10−8 cm2/s (oxygen isotope exchange data). Such characteristics are determined by the cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial oxygen. Gd doping, however, resulted in non-uniformity of the oxygen migration routes. To describe this feature, a mathematical model has been developed including a slow exchange between neighboring oxide anions. Oxygen mobility decreases with increasing Gd content.

KW - Chemical diffusion

KW - Mass relaxation

KW - Oxygen isotope exchange

KW - Oxygen mobility and surface reactivity

KW - Ruddlesden – Popper phases

KW - Structure evolution

KW - SURFACE EXCHANGE

KW - STABILITY

KW - DEFECT

KW - FUEL-CELLS

KW - MASS-TRANSPORT

KW - INTERSTITIAL OXYGEN

KW - CATHODE

KW - Ruddlesden - Popper phases

KW - OXYGEN-EXCHANGE KINETICS

KW - DIFFUSION

KW - ELECTROCHEMICAL PERFORMANCE

UR - http://www.scopus.com/inward/record.url?scp=85091250040&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2020.115462

DO - 10.1016/j.ssi.2020.115462

M3 - Article

AN - SCOPUS:85091250040

VL - 357

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

M1 - 115462

ER -

ID: 25313372