Sfoglia per Soggetto "BaCeO3"
Items 1-11 di 11
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Acceptor doping effects on microstructure, thermal and electrical properties of proton-conducting BaCe0.5Zr0.3Ln0.2O3-δ (Ln = Yb, Gd, Sm, Nd, la or Y) ceramics for solid oxide fuel cell applications
(2016)In the present work, six materials belonging to Ln-doped BaCeO3-BaZrO3 system (Ln = Yb, Y, Gd, Sm, Nd, La) are prepared and characterized. The impact of the type of the acceptor dopant on i) the microstructure (relative ... -
Advanced materials for SOFC application: Strategies for the development of highly conductive and stable solid oxide proton electrolytes
(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 ... -
BaCe0.5Zr0.3Y0.2–xYbxO3–δ proton-conducting electrolytes for intermediate-temperature solid oxide fuel cells
(2017)This work describes new findings concerning the preparation of Y- and Yb- co-doped BaCeO3–BaZrO3 materials, their structural, microstructural, electrical characterization and application as electrolytes for solid oxide ... -
Combined amperometric and potentiometric hydrogen sensors based on BaCe0.7Zr0.1Y0.2O3-δ proton-conducting ceramic
(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 ... -
Conductivity of Gd-doped BaCeO3 protonic conductor in H2-H2O-O2 atmospheres
(2013)This work proposes a radically new simple method of evaluation of the proton conductivity based on measurement of the conductivity of ceramic materials depending on the oxygen partial pressure (pO2) at a gradual transition ... -
The effect of oxygen and water vapor partial pressures on the total conductivity of BaCe0.7Zr0.1Y0.2O3–Δ
(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 ... -
Grain and grain boundary transport in BaCe0.5Zr0.3Ln0.2O3−Δ (Ln – Y or lanthanide) electrolytes attractive for protonic ceramic fuel cells application
(2017)Protonic ceramic fuel cells (PCFCs) belong to very attractive energy conversion systems, which are able to operate effectively at low- and intermediate temperature ranges. The improvement of their electrochemical characteristics ... -
Insights on thermal and transport features of BaCe0.8-xZrxY0.2O3-delta proton-conducting materials
(2015)BaCe0.8-xZrxY0.2O3-delta-based materials (BCZYx, 0 <= x <= 0.8) are obtained through a modified citrate-nitrate combustion method at 1150 degrees C with following sintering at 1450 degrees C. Then their thermomechanical ... -
Proton-conducting BaCe0.5Zr0.3Ln0.2O3-δ (Ln = Yb, Gd, Sm, Nd, la or Y) ceramics for solid oxide fuel cell applications: Effects of acceptor-doping on microstructure, thermal and electrical properties
(2015)Six materials belonging to Ln-doped BaCeO3-BaZrO3 system (Ln = Yb, Y, Gd, Sm, Nd, La) are prepared and characterized in the present work. The impact of the type of the acceptor dopant on (i) the microstructure (relative ... -
Sulfur and carbon tolerance of BaCeO3-BaZrO3 proton-conducting materials
(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 ... -
Transport properties of highly dense proton-conducting BaCe0.8–xZrxDy0.2O3–δ materials in low- and high-temperature ranges
(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, ...