Electrochemical performance of nanocrystalline nickel/gadolinia-doped ceria thin film anodes for solid oxide fuel cells

Muecke, Ulrich P.; Akiba, Kojiro; Infortuna, Anna; Салкус, Т.; Stus, N. V.; Gauckler, Ludwig J.

doi:10.1016/j.ssi.2007.10.002

Cited by 67 publications

(47 citation statements)

References 19 publications

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“…The activation energies (E a ) were estimated from the slope of the linear of the experimental data-E a = 108 kJ mol -1 for the reference anode and E a = 111 kJ mol -1 for the infiltrated anode. These activation energy values were typical for the Ni-CGO/CGO/Ni-CGO symmetrical cell reported in the literature-E a = 140 kJ mol -1 was reported by Almar et al [38] for mesoporous Ni-CGO anodes; Muecke et al [39] found that thin film Ni-GDC anodes exhibited E a = 145 kJ mol -1 ; Galinski et al [40] reported E a = 164 kJ mol -1 for sprayed Ni-40GDC anodes. The relatively high summit frequencies, the similarity of the activation energies over the measured temperature range and the linearity of ASR inf versus N dependence suggested that a charge transfer process was the most likely rate limiting step among the reactions occurring in the infiltrated anode [16,23,30].…”

Section: Resultssupporting

confidence: 74%

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

Wang¹,

Tomov²,

Mitchell-Williams³

et al. 2017

J Appl Electrochem

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The effect of inkjet printing infiltration of Gd 0.1 Ce 0.9 O 2-x in NiO-Gd 0.1 Ce 0.9 O 2-x anodes on the performance of symmetrical and button cells was investigated. The anodes were fabricated by inkjet printing of suspension and sol inks. Symmetrical cells were produced from composite suspension inks on Gd 0.1 Ce 0.9 O 2-x electrolyte. As-prepared scaffolds were infiltrated with Gd 0.1-Ce 0.9 O 2 ink. Increasing the number of infiltration steps led to formation of ''nano-decoration'' on pre-sintered anodes. High resolution SEM analysis was employed for microstructural characterization revealing formation of fine anode sub-structure with nanoparticle size varying in the range of 50-200 nm. EIS tests were conducted on symmetrical cells in 4% hydrogen/argon gas flow. The measurements showed substantial reduction of the activation polarization as a function of the number of infiltrations. The effect was assigned to the extension of the triple phase boundary. The i-V testing of a reference (NiO-8 mol% Y 2 O 3 stabilized ZrO 2 /NiO-Gd 0.1 Ce 0.9 O 2-x /Gd 0.1 Ce 0.9-O 2-x /Gd 0.1 Ce 0.9 O 2-x -La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-d ) cell and an identical cell with infiltrated anode revealed *2.5 times improvement in the maximum output power at 600°C which corresponded with the reduction of the polarization resistance of the symmetrical cells at the same temperature (2.8 times). This study demonstrated the potential of inkjet printing technology as an infiltration tool for cost effective commercial SOFC processing. Graphical abstract

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Section: Resultssupporting

confidence: 74%

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

Wang¹,

Tomov²,

Mitchell-Williams³

et al. 2017

J Appl Electrochem

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“…1,10 To obtain nano-structured electrodes for thin electrolytes, most of thin film base SOFCs use single phase noble metal electrodes such as porous Pt fabricated by sputtering, 4,6,8,10,12 but the metal coarsening at operating temperatures eventually leads to serious problems such as the reduction of the triple phase boundary length and thus degradation of the cell performance. 10,12 Therefore, ceramic-metal composites (cermets) fabricated by thin film deposition methods 1,[13][14][15][16][17][18][19][20][21][22] were investigated actively to prevent the metal coarsening since the ceramic network in the nano-composite is expected to retain the excessive metal grain growth 6,23 as in conventional SOFCs. In some cases, desirable microstructures, such as a nano-porous structure and an interpenetrating nano-composite structure, 19,22 as well as promising electrochemical performances, such as lower overpotentials and electrode resistances, [20][21][22] were reported.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Ni agglomeration in PLD fabricated Ni-YSZ composite for surface modification of SOFC anode

Noh

Son

Lee

et al. 2010

Journal of the European Ceramic Society

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“…[19][20][21][22][23][24] In view of the broad field of applications for zirconia and ceria-based ceramics such as gas sensor materials, [25][26][27][28] electrolyte, and anode materials for microsolid oxide fuel cell membranes, [22,24,[29][30][31][32][33][34] oxygen pumps, and catalytic supports for automotive exhaust [35][36][37] or even biological systems [38] this is problematic. For one metal oxide material the thin film properties vary strongly depending on the ambient state of crystallization and grain growth, and original content of organics and hydroxyl-groups after preparation.…”

Section: Introductionmentioning

confidence: 99%

Crystallization and Grain Growth Kinetics for Precipitation‐Based Ceramics: A Case Study on Amorphous Ceria Thin Films from Spray Pyrolysis

Rupp

Scherrer

Harvey

et al. 2009

Adv Funct Materials

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The introductory part reviews the impact of thin film fabrication, precipitation versus vacuum‐based methods, on the initial defect state of the material and microstructure evolution to amorphous, biphasic amorphous‐nanocrystalline, and fully nanocrystalline metal oxides. In this study, general rules for the kinetics of nucleation, crystallization, and grain growth of a pure single‐phase metal oxide thin film made by a precipitation‐based technique from a precursor with one single organic solvent are discussed. For this a complete case study on the isothermal and non‐isothermal microstructure evolution of dense amorphous ceria thin films fabricated by spray pyrolysis is conducted. A general model is established and comparison of these thin film microstructure evolution to kinetics of classical glass‐ceramics or metallic glasses is presented. Knowledge on thermal microstructure evolution of originally amorphous precipitation‐based metal oxide thin films allows for their introduction and distinctive microstructure engineering in devices‐based on microelectromechanical (MEMS) technology such as solar cells, capacitors, sensors, micro‐solid oxide fuel cells, or oxygen separation membranes on Si‐chips.

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Electrochemical performance of nanocrystalline nickel/gadolinia-doped ceria thin film anodes for solid oxide fuel cells

Cited by 67 publications

References 19 publications

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

Suppression of Ni agglomeration in PLD fabricated Ni-YSZ composite for surface modification of SOFC anode

Crystallization and Grain Growth Kinetics for Precipitation‐Based Ceramics: A Case Study on Amorphous Ceria Thin Films from Spray Pyrolysis

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