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Degradation Kinetics of LSM–YSZ Composite Materials
https://doi.org/10.15518/isjaee.2016.19-20.069-080
Abstract
The paper studies the influence of the processes of particle coarsening and cation interdiffusion on the degradation kinetics of catalytic activity of LSM–YSZ composite materials in relation to the process of interaction with oxygen from the gas phase. The oxygen exchange kinetics with the gas phase has been studied by means of isotope exchange method with gas phase equilibration at T = 850 °C and Po2 = 10–2 atm. Samples were tested during 1000 hours. It is shown that the oxygen exchange coefficient with the sample surface decreases with the increasing of exposure time. The paper discusses the physical causes leading to a decrease of the oxygen exchange coefficient.
About the Authors
M. V. Ananyev
Institute of High Temperature Electrochemistry of the Ural Branch of the RAS;
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Information about the author: Ph.D. (chemistry), the Head of Laboratory of SOFC, Institute of High Temperature Electrochemistry of the Ural Branch of the RAS.
Education: Ural State University, 2008.
Research area: oxygen and hydrogen isotope exchange; oxygen diffusion; nonstoichiometric oxides; composite materials; SOFC.
Publications: 27.
20 Academicheskaya str., Yekaterinburg, 620137
tel.: +7 (343) 362 33 01, fax: +7(343)374-59-92
19 Mira str., Yekaterinburg, 620002
tel.: +7(343)375-44-74
A. S. Farlenkov
Institute of High Temperature Electrochemistry of the Ural Branch of the RAS;
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Information about the author: engineer/Ph.D. student, Institute of High Temperature Electrochemistry of the Ural Branch of the RAS.
Education: UrFU named after the first President of Russia B. N. Yeltsin, 2014.
Research area: scanning electron microscopy; thermogravimetric analysis; hydrogen isotope exchange; proton-conducting oxides; composite materials; SOFC.
Publications: 11.
20 Academicheskaya str., Yekaterinburg, 620137
tel.: +7 (343) 362 33 01, fax: +7(343)374-59-92
19 Mira str., Yekaterinburg, 620002
tel.: +7(343)375-44-74
V. A. Eremin
Institute of High Temperature Electrochemistry of the Ural Branch of the RAS;
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Information about the author: Junior Researcher, Institute of High Temperature Electrochemistry of the Ural Branch of the RAS.
Education: Ural State University, 2009.
Research area: oxygen isotope exchange; oxygen diffusion; nonstoichiometric oxides; composite materials; SOFC.
Publications: 9.
20 Academicheskaya str., Yekaterinburg, 620137
tel.: +7 (343) 362 33 01, fax: +7(343)374-59-92
19 Mira str., Yekaterinburg, 620002
tel.: +7(343)375-44-74
E. Kh. Kurumchin
Institute of High Temperature Electrochemistry of the Ural Branch of the RAS
Russian Federation
Russian Federation
Information about the author: D.Sc. (chemistry), Chief Researcher, Institute of High Temperature Electrochemistry of the Ural Branch of the RAS.
Education: Ural State University, 1969.
Research area: oxides; solid state electrolytes; mixed conductors; protonconducting oxides; kinetics; diffusion; oxygen isotope exchange; electrochemistry; heterogeneous catalysis.
Publications: 193.
20 Academicheskaya str., Yekaterinburg, 620137
tel.: +7 (343) 362 33 01, fax: +7(343)374-59-92
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Review
For citations:
Ananyev M.V., Farlenkov A.S., Eremin V.A., Kurumchin E.Kh. Degradation Kinetics of LSM–YSZ Composite Materials. Alternative Energy and Ecology (ISJAEE). 2016;(19-20):69-80. (In Russ.) https://doi.org/10.15518/isjaee.2016.19-20.069-080
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