Listar por tema "Perovskite"

Advanced materials for SOFC application: Strategies for the development of highly conductive and stable solid oxide proton electrolytes

Medvedev D.A., Lyagaeva J.G., Gorbova E.V., Demin A.K., Tsiakaras P. (2016)

The basic strategies of improving the stability of proton-conducting electrolytes based on barium cerate (BaCeO3) by means of: (i) co-doping, (ii) doping by nonmetallic elements and (iii) composites development, are ...

Combined amperometric and potentiometric hydrogen sensors based on BaCe0.7Zr0.1Y0.2O3-δ proton-conducting ceramic

Kalyakin A., Volkov A., Lyagaeva J., Medvedev D., Demin A., Tsiakaras P. (2016)

The present study aims at the potential application of BaCe0.7Zr0.1Y0.2O3-δ proton-conducting material as an electrolyte for hydrogen sensor operating under potentiometric and amperometric modes. The reason of selection ...

Core-shell carbon-polymer quantum dot passivation for near infrared perovskite light emitting diodes

Tountas M., Soultati A., Armadorou K.-K., Ladomenou K., Landrou G., Verykios A., Skoulikidou M.-C., Panagiotakis S., Fillipatos P.-P., Yannakopoulou K., Chroneos A., Palilis L.C., Yusoff A.R.B.M., Coutsolelos A.G., Argitis P., Vasilopoulou M. (2022)

High-performance perovskite light-emitting diodes (PeLEDs) require a high quality perovskite emitter and appropriate charge transport layers to facilitate charge injection and transport within the device. Solution-processed ...

Design and applications of potentiometric sensors based on proton-conducting ceramic materials. A brief review

Volkov A., Gorbova E., Vylkov A., Medvedev D., Demin A., Tsiakaras P. (2017)

The present review work is devoted to potentiometric sensors based on high-temperature proton-conducting ceramic materials. The technology developments and possible application of such sensors for the determination of ...

Designing a protonic ceramic fuel cell with novel electrochemically active oxygen electrodes based on doped Nd0.5Ba0.5FeO3-: δ

Lyagaeva J., Danilov N., Tarutin A., Vdovin G., Medvedev D., Demin A., Tsiakaras P. (2018)

The Fe-based perovskite-structured Nd0.5Ba0.5FeO3-δ (NBF) system represents the basis for developing promising electrode materials for solid oxide fuel cells with proton-conducting electrolytes. This study aims at investigating ...

The effect of oxygen and water vapor partial pressures on the total conductivity of BaCe0.7Zr0.1Y0.2O3–Δ

Danilov N., Lyagaeva J., Kasyanova A., Vdovin G., Medvedev D., Demin A., Tsiakaras P. (2017)

The effect of oxygen and water vapor partial pressure on the total conductivity of the proton-conducting BaCe0.7Zr0.1Y0.2O3–δ material is investigated in the present work. Single-phase and dense ceramic materials have been ...

Improved ceramic and electrical properties of CaZrO3-based proton-conducting materials prepared by a new convenient combustion synthesis method

Lyagaeva J., Danilov N., Korona D., Farlenkov A., Medvedev D., Demin A., Animitsa I., Tsiakaras P. (2017)

The present work emphasizes the features of a new combustion synthesis method suitable for easy synthesis and sintering of CaZrO3-based materials as promising proton-conducting electrolytes for electrochemical applications ...

New mixed ionic-electronic composite materials based on SRTI0.5FE0.5O3-Δ and CE0.8(SM0.8SR0.2)0.2O2-Δ

Murashkina, A.; Pikalova, E.; Medvedev, D.; Demin, A.; Tzorbatzoglou, F.; Tsiakaras, P. (2013)

The crystal, electrical and electrochemical properties of the new composite materials of (1-x)SrTi0.5Fe0.5O3-δ-xCe0.8(Sm0.8Sr0.2)0.2O2-δ (0≤x≤1, Δx= 0.25) prepared by solid phase method. Composites have no phase interaction. ...

Physico-chemical characterization and transport features of proton-conducting Sr-doped LaYO3 electrolyte ceramics

Danilov N., Vdovin G., Reznitskikh O., Medvedev D., Demin A., Tsiakaras P. (2016)

Structure, thermal and transport properties of chemically stable proton-conducting La0.9Sr0.1YO3-δ electrolyte are investigated in the present work. The features of ceramics preparation, thermal expansion and electrical ...

Polarization study of Fe|BaCe<inf>0.5</inf>Zr<inf>0.3</inf>Y<inf>0.08</inf>Yb<inf>0.08</inf>Cu<inf>0.04</inf>O<inf>3-δ</inf>|Fe electrochemical cells in wet H<inf>2</inf> atmosphere

Mitri, S.; Medvedev, D.; Kontou, S.; Gorbova, E.; Demin, A.; Tsiakaras, P. (2015)

In the present work, the steady-state current-overpotential characteristics of the Fe|BaCe<inf>0.5</inf>Zr<inf>0.3</inf>Y<inf>0.08</inf>Yb<inf>0.08</inf>Cu<inf>0.04</inf>O<inf>3-δ</inf>|Fe interface as a function of the ...

Sulfur and carbon tolerance of BaCeO3-BaZrO3 proton-conducting materials

Medvedev, D.; Lyagaeva, J.; Plaksin, S.; Demin, A.; Tsiakaras, P. (2015)

In the present work, BaCe0.8-xZrxY0.2O3-delta-based ceramic samples (BCZYx) are prepared and their chemical stability in corrosive atmospheres containing high concentrations of H2O, CO2 and H2S is investigated. Based on ...

Textured BaCe(0.5)Zr(0.3)Ln(0.2)O(3-delta) (Ln = Yb, Y, Gd, Sm, Nd and La) ceramics obtained by the aid of solid-state reactive sintering method

Lyagaeva, J.; Medvedev, D.; Filonova, E.; Demin, A.; Tsiakaras, P. (2015)

Dense BaCe(0.5)Zr(0.3)Ln(0.2)O(3-delta) (Ln = Yb, Y, Gd, Sm, Nd and La) proton-conducting ceramic materials are successfully prepared by solid-state reactive sintering method. The XRD analysis shows that the surface of ...

Transport properties of highly dense proton-conducting BaCe0.8–xZrxDy0.2O3–δ materials in low- and high-temperature ranges

Danilov N.A., Lyagaeva J.G., Medvedev D.A., Demin A.K., Tsiakaras P. (2018)

Proton-conducting materials constitute a class of oxide compounds possessing the required properties for application as electrolytes for low- and intermediate temperature solid oxide cells. In the present investigation, ...