Thermal Plasma Spraying Applied on Solid Oxide Fuel Cells

Soysal, Dennis; Arnold, Johannes; Szabo, Patric; Henne, R.; Ansar, Syed Asif

doi:10.1007/s11666-013-9929-4

Cited by 33 publications

(22 citation statements)

References 24 publications

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“…On the one hand its electrical conductivity has to be as high as possible to minimize electric losses and supply electrons [22]. In this investigation commercially available carbide of molybdenum powder catalyst (Mo-Mo 2 C) and three metal oxides (e.g.…”

Section: Molybdenum Carbide Based Sofc Anode Propertiesmentioning

confidence: 99%

“…It is anticipated that microstructures of fine or nanostrctured powders in particular will be of considerable interest for use in SOFCs due to their potential to increase the surface area of active sites on which the electrode reactions take place, thereby improving reaction kinetics. (anode: porous layer, electrolyte: dense layer, cathode: porous layer) deposition using beyond conventional thermal spray techniques (such as suspension HVOF [26] and suspension plasma spraying [22]). Moreover, the introduction of carbon or other pore formers to the feedstock powder can induce a significant increment of the porosity after the pore formers are burnt out (e.g.…”

Section: Future Prospectsmentioning

confidence: 99%

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Development of Plasma-Sprayed Molybdenum Carbide-Based Anode Layers with Various Metal Oxides for SOFC

et al. 2015

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Section: Molybdenum Carbide Based Sofc Anode Propertiesmentioning

confidence: 99%

Section: Future Prospectsmentioning

confidence: 99%

Development of Plasma-Sprayed Molybdenum Carbide-Based Anode Layers with Various Metal Oxides for SOFC

et al. 2015

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“…Good performance has also been reported from the metal supported-SOFC (MS-SOFC) at 800°C for the cells fabricated with LSCF cathode electrodes deposited directly on YSZ [45][46][47]. These studies suggest that thermal spraying can be applied beneficially for the deposition of LSCF on YSZ without the interlayer and the and good performance can indeed be achieved as high temperatures firing which leads to undesirable interlayer reactions has been avoided [49]. These studies suggest that thermal spraying can be applied beneficially for the deposition of LSCF on YSZ without the interlayer and the and good performance can indeed be achieved as high temperatures firing which leads to undesirable interlayer reactions has been avoided [49].…”

Section: Introductionmentioning

confidence: 90%

Microstructure and Polarization Studies on Interlayer Free La_0.65Sr_0.3Co_0.2Fe_0.8O_3–_δ Cathodes Fabricated on Yttria Stabilized Zirconia by Solution Precursor Plasma Spraying

et al. 2016

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Nano‐structured cathodes of La0.65Sr0.3Co0.2Fe0.8O3–δ (LSCF) are fabricated by solution precursor plasma spraying (SPPS) on yttria stabilized zirconia (YSZ) electrolytes (LSCF‐SPPS‐YSZ). Phase pure LSCF is obtained at all plasma power. Performances of LSCF‐SPPS‐YSZ cathodes are compared with conventionally prepared LSCF cathodes on YSZ (LSCF‐C‐YSZ) and gadolinium doped ceria (GDC) (LSCF‐C‐GDC) electrolytes. High Rp is observed in the LSCF‐C‐YSZ (∼42 Ohm cm2 at 700 °C) followed by LSCF‐C‐GDC (Rp ∼ 1.5 Ohm cm2 at 700 °C) cathodes. Performance of the LSCF‐SPPS‐YSZ cathodes (Rp ∼ 0.1 Ohm cm2 at 700 °C) is found to be even superior to the performance of LSCF‐C‐GDC cathodes. High performance in LSCF‐SPPS‐YSZ cathodes is attributed to its nano‐structure and absence of any interfacial insulating phase which may be attributed to the low temperature at the interaction point of LSCF and YSZ and low interaction time between LSCF and YSZ during SPPS process. In the time scale of 100 h, no change in the polarization resistances is observed at 750 °C. Based on the literature and from the present studies it can be stated that SOFC with YSZ electrolyte and LSCF‐SPPS‐YSZ cathode can be operated at 750 °C for a longer duration of time and good performance can probably be achieved.

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“…Plasma spraying is a well-established process to deposit ceramic coatings applied to different industrial fields such as YSZ deposits for thermal-barrier coatings (TBCs) (Ref [1][2][3][4] or for electrolyte layer in solid oxide fuel cells (Ref 5,6). Many investigations have demonstrated that the properties of coating depend on its microstructure ( Ref 7).…”

Section: Introductionmentioning

confidence: 99%

A TEM Study of the Microstructure of Plasma-Sprayed YSZ Near Inter-splat Interfaces

2015

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The splat interface bonding state which changes heat transfer conditions and thus the cooling rate during splat cooling may influence the interface microstructure. In this paper, YSZ coating was deposited by atmospheric plasma spraying with substrate cooling during deposition. Subsequent characterization was implemented using high resolution transmission electron microscopy to examine the local microstructures near the interfaces at the bonded and unbonded zones. Selected area diffraction analyses of the splats across both the bonded interface and unbonded interface revealed that all bulk splats present a metastable tetragonal structure. Results showed that the size of columnar grains within a splat was significantly influenced by the interface bonding. At the unbonded region in the splat, large columnar grains form which can be attributed to poor thermal contact of melt to the underlying splat surface before its solidification. At the bonded zones, the splat presents a much fine columnar grain structure, which is attributed to good thermal contact of the melt to the underlying splat before solidification. Moreover, it is evident that the bonded interface region presents a distinct microstructure feature from the fine columnar grains suggesting the crystal defect of high density of dislocations at the interface.

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Thermal Plasma Spraying Applied on Solid Oxide Fuel Cells

Cited by 33 publications

References 24 publications

Development of Plasma-Sprayed Molybdenum Carbide-Based Anode Layers with Various Metal Oxides for SOFC

Development of Plasma-Sprayed Molybdenum Carbide-Based Anode Layers with Various Metal Oxides for SOFC

Microstructure and Polarization Studies on Interlayer Free La_0.65Sr_0.3Co_0.2Fe_0.8O_3–_δ Cathodes Fabricated on Yttria Stabilized Zirconia by Solution Precursor Plasma Spraying

A TEM Study of the Microstructure of Plasma-Sprayed YSZ Near Inter-splat Interfaces

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Thermal Plasma Spraying Applied on Solid Oxide Fuel Cells

Cited by 33 publications

References 24 publications

Development of Plasma-Sprayed Molybdenum Carbide-Based Anode Layers with Various Metal Oxides for SOFC

Development of Plasma-Sprayed Molybdenum Carbide-Based Anode Layers with Various Metal Oxides for SOFC

Microstructure and Polarization Studies on Interlayer Free La0.65Sr0.3Co0.2Fe0.8O3–δ Cathodes Fabricated on Yttria Stabilized Zirconia by Solution Precursor Plasma Spraying

A TEM Study of the Microstructure of Plasma-Sprayed YSZ Near Inter-splat Interfaces

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Microstructure and Polarization Studies on Interlayer Free La_0.65Sr_0.3Co_0.2Fe_0.8O_3–_δ Cathodes Fabricated on Yttria Stabilized Zirconia by Solution Precursor Plasma Spraying