Correlation between microstructure and degradation in conductivity for cubic Y2O3-doped ZrO2

Butz, Benjamin; Kruse, Paul W.; Störmer, Heike; Gerthsen, D.; Müller, Axel; Weber, André; Ivers-Tiffée, Ellen

doi:10.1016/j.ssi.2006.09.003

Cited by 121 publications

(93 citation statements)

References 15 publications

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“…The vacancies, through the coupled interactions among the vacancies and ions in these different alloys can dramatically affect the structural, thermal, mechanical and electrical properties of the system. Furthermore, the optimum ionic conductivity of each alloy varies with synthesis route and sintering conditions due to the resultant diverse local morphologies and microstructures (Badwal et al, 1992;Butz et al, 2006;Chen et al, 2002;Fukui et al, 2004;Ioffe et al, 1978;Korte et al, 2008;Zhang et al, 2007;Zhu et al, 2005). Thus a variety of different morphologies and microstructures of YSZ can be found in experiments (Badwal et al, 1992;Butz et al, 2006;Chen et al, 2002;Cheng et al, 2011;Etsell et al, 1970;Fukui et al, 2004;Ioffe et al, 1978;Korte et al, 2008;Lashtabeg et al, 2006;Zhang et a., 2007;Zhu et al, 2005).…”

Section: Wwwintechopencommentioning

confidence: 99%

The Roles of Classical Molecular Dynamics Simulation in Solid Oxide Fuel Cells

Lau¹,

Dunlap²

2012

Molecular Dynamics - Theoretical Developments and Applications in Nanotechnology and Energy

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Section: Wwwintechopencommentioning

confidence: 99%

The Roles of Classical Molecular Dynamics Simulation in Solid Oxide Fuel Cells

Lau¹,

Dunlap²

2012

Molecular Dynamics - Theoretical Developments and Applications in Nanotechnology and Energy

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“…Once these mechanisms are fully understood and ranked in terms of importance, effective mitigation strategies can be developed. Possible degradation mechanisms include transport of impurities leading to electrode poisoning and deactivation [16], coarsening of electrodes [17], loss of electrolyte ionic conductivity [18], depletion of oxygen vacancies in mixed conducting electrodes [19,20], and electrode delamination [21].…”

Section: Urfhhglqjv Ri Wkh $60( Qwhuqdwlrqdo 0hfkdqlfdo (Qjlqhhulqjmentioning

confidence: 99%

Testing and Performance Analysis of NASA 5 cm by 5 cm Bi-Supported Solid Oxide Electrolysis Cells Operated in Both Fuel Cell and Steam Electrolysis Modes

O’Brien

Stoots

et al. 2011

Volume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for E

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A series of 5 cm by 5 cm bi-supported Solid Oxide Electrolysis Cells (SOEC) were produced by NASA for the Idaho National Laboratory (INL) and tested under the INL High Temperature Steam Electrolysis program. The results from the experimental demonstration of cell operation for both hydrogen production and operation as fuel cells is presented. An overview of the cell technology, test apparatus and performance analysis is also provided.

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“…Sun et al [17] reported that the composite electrolyte, BaCe 0. 8 phases, the composite electrolyte exhibited excellent conductivity and significantly enhanced the fuel cell performances. Hence, the composites of doped CeO 2 and doped BeCeO 3 were regarded as the ideal candidate for electrolyte materials in the IT-SOFCs.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, the research on SOFCs has been carried out around the world. However, the necessity for high operating temperatures (around 1000 °C) has resulted in high costs and materials compatibility challenges [7][8][9]. Consequently, significant effort has been devoted to the development of intermediate-temperature (500-800 °C) SOFCs (IT-SOFCs).…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of BaCe0.8Y0.2O2.9-Ce0.85Sm0.15O1.925 composite electrolytes for IT-SOFCs

Tian

Deng

et al. 2014

Sci. China Chem.

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The BaCe 0.8 Y 0.2 O 2.9 -Ce 0.85 Sm 0.15 O 1.925 composite electrolytes were prepared with BaCe 0.8 Y 0.2 O 2.9 (BCY) and Ce 0.85 Sm 0.15 O 1.925 (SDC). The SDC and BCY powders were mixed in the weight ratio of 95:5, 85:15, and 75:25, respectively (named as BS95, BS85, and BS75). Because of the composite effect between the SDC and BCY phases, the BS95 and BS85 exhibit improved conductivity compared with the pure SDC and BCY. The conductivity of BS95 is higher than that of BS85, indicating that the composite effect of BS95 is greater than that of BS85. Nevertheless, the composite effect in BS75 does not exist. Hence, we conclude that the composite effect in the BCY-SDC composites will decrease with the increase of the amount of BCY and even disappear when the amount of BCY exceeds a certain value. In our case, the optimum composition of the composite electrolyte is 95 wt% SDC and 5 wt% BCY. The BS95 has the highest conductivity ( t = 0.07808 S cm 1 , at 800 °C) and the fuel cell based on the BS95 shows the best performance (the maximum power density reaches as high as 526 mw cm 2 at 750 °C). The encouraging results suggest that the BCY-SDC composites are the very promising electrolyte materials for IT-SOFCs. SDC, BCY, composite electrolyte, composite effect, SOFC

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Correlation between microstructure and degradation in conductivity for cubic Y2O3-doped ZrO2

Cited by 121 publications

References 15 publications

The Roles of Classical Molecular Dynamics Simulation in Solid Oxide Fuel Cells

The Roles of Classical Molecular Dynamics Simulation in Solid Oxide Fuel Cells

Testing and Performance Analysis of NASA 5 cm by 5 cm Bi-Supported Solid Oxide Electrolysis Cells Operated in Both Fuel Cell and Steam Electrolysis Modes

Fabrication and characterization of BaCe0.8Y0.2O2.9-Ce0.85Sm0.15O1.925 composite electrolytes for IT-SOFCs

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