Production and Performance of Copper-based Anode-supported SOFCs

Azzolini, Andrea; Downs, John A.

doi:10.1149/06801.2583ecst

Cited by 11 publications

(5 citation statements)

References 17 publications

(21 reference statements)

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“…This led some authors to develop a new method for the production of planar copper-based anode supported IT-SOFC co-sintered at 950°C [14][15][16][17]. Cu is primarily used as the current collector and CeO 2 imparts the catalytic activity for oxidation reactions.…”

Section: Introductionmentioning

confidence: 99%

Copper-based electrodes for IT-SOFC

Zurlo

Iannaci

Bartolomeo

2019

Journal of the European Ceramic Society

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Copper and gadolinium doped ceria (GDC) anode supported fuel cells were co-sintered at relatively low temperature (900°C) and successfully tested in the intermediate temperature (IT) range. The GDC electrolyte densification was promoted by a compressive strain induced by increasing the anodic thickness and was evaluated by SEM investigation. Instead of more commonly used La 0.8 Sr 0.2 Fe 0.6 Co 0.4 O 3-δ , strontium and copperdoped lanthanum ferrite La 0.8 Sr 0.2 Fe 0.8 Cu 0.2 O 3-δ (LSFCu) mixed with 30 wt% GDC (LSFCu-GDC) was employed as cathodic material. Preliminary tests on Cu-GDC/GDC/LSFCu-GDC single cells showed promising results at temperature as low as 650°C using hydrogen as fuel.

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Section: Introductionmentioning

confidence: 99%

Copper-based electrodes for IT-SOFC

Zurlo

Iannaci

Bartolomeo

2019

Journal of the European Ceramic Society

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“…Some cells were also produced by using 55 vol.% CuO in the anodic layer. Unfortunately, such cells are characterized by the presence of cracks within the electrolyte, which cause macroscopic leakages, accounted for by thermal expansion coefficient mismatch between anode and electrolyte upon cooling after sintering . This result suggests that 50 vol.% CuO load shall not be exceeded in the realization of the anode in the considered cell configuration.…”

Section: Resultsmentioning

confidence: 99%

“…According to previous research activities, GDC and Cu have synergistic effect towards fuel oxidation. Nevertheless, excessive CuO amount within the anodic cermet could lead to cell failure upon sintering, due to the different thermal expansion coefficient between anode and electrolyte [7][8][9]. Additional investigations are therefore required to optimize Cu/GDCbased anodes and point out their potential performances.…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, the relatively low CuO melting point (≈ 1,100 °C) made direct co‐sintering of the anodes and electrolytes infeasible for a decade. Recently, innovative Ni‐free intermediate temperature (IT) solid oxide fuel cell (IT‐SOFC), based on Cu/Gadolinia‐doped ceria (GDC) anode and GDC based electrolyte, have been successfully realized by one step cosintering for both planar and tubular architectures . Such cells showed good electronic conductivity and tolerance towards sulfur‐containing fuels .…”

Section: Introductionmentioning

confidence: 99%

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Influence of Copper‐based Anode Composition on Intermediate Temperature Solid Oxide Fuel Cells Performance

2017

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Planar solid oxide fuel cells (SOFCs), which are intended to be used in the intermediate temperature range (600–800 °C) and whose supporting anode contains various amount of Cu in Li‐doped gadolinia‐doped ceria matrix, are produced and characterized in the present work. Intermediate temperature solid oxide fuel cell (IT‐SOFC) performances are investigated by recording polarization and power density at different temperatures. Electrochemical impedance spectroscopy (EIS) measurements are carried out to analyze how internal resistances change as function of temperature and, above all, for variable Cu content. The gadolinia‐doped ceria electrolyte microstructure and the cell integrity after sintering are also shown to depend on the initial CuO content in the anode. The electronic conductivity increases with Cu content within the anodic cermet. When the anode contains more than 25 vol.% CuO, a dense Li‐doped gadolinia‐doped ceria electrolyte can be obtained by sintering at 900 °C. Conversely, CuO load in excess to 50% in the anode is detrimental because of the formation of macroscopic cracks within the electrolyte. Intermediate temperature solid oxide fuel cells produced with an anodic layer containing 50 vol.% CuO show the lowest impedance parameters.

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“…In recent studies [30,31], Cu has been suggested as an alternative to Ni as the electronic conductor in SOFC anodes. Recently, Cu/yttria stabilized zirconia (YSZ), Cu/samaria-doped ceria (SDC) and Cu/gadolinia-doped ceria (GDC) anodes [32][33][34][35][36] have been developed and tested, showing good electronic conductivity and tolerance towards sulfur-containing fuels. However, Cu has a low catalytic activity for hydrogen or hydrocarbon electrochemical oxidation, and so doped ceria should be used instead of YSZ in order to improve the cell performance.…”

Section: Deposition Of Cu-based Sofc Anode Functional Layersmentioning

confidence: 99%

Magnetron Deposition of Anode Functional Layers for Solid Oxide Fuel Cells

Solovyev¹,

Ионов²,

Шипилова³

et al. 2019

Chemical Problems

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The proposed review is dedicated to the latest achievements in the field of magnetron deposition of thin-film anode functional layers (AFLs)for solid oxide fuel cells (SOFCs) of various designs (electrolyte-supported, anode-supported and micro-SOFC). Manufacturing of SOFCs components remains nowadays a key point for the industrial development of this electrochemical conversion device. Formation of thin nanostructured anodes by physical vapor deposition methodsallowsincreasing efficiency of SOFCs due to the reduction of polarization losses at the anode. The review discusses the use of thin-film anodes for different SOFC configurationsintended to work in low, intermediate and hightemperature ranges. The influence of the deposition parameters, microstructure and chemical composition of AFLs on SOFCperformance is analyzed.

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Production and Performance of Copper-based Anode-supported SOFCs

Cited by 11 publications

References 17 publications

Copper-based electrodes for IT-SOFC

Copper-based electrodes for IT-SOFC

Influence of Copper‐based Anode Composition on Intermediate Temperature Solid Oxide Fuel Cells Performance

Magnetron Deposition of Anode Functional Layers for Solid Oxide Fuel Cells

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