Tape casting fabrication, co-sintering and optimisation of anode/electrolyte assemblies for SOFC based on BIT07-Ni/BIT07

Letilly, M.; Joubert, Olivier; Caldés, Maria Teresa

doi:10.1016/j.ijhydene.2011.11.140

Cited by 19 publications

(7 citation statements)

References 44 publications

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“…5) have been realized by SEM after a sintering treatment (9 h at 1380°C). 10 The electrolyte is dense (relative density of 95%), its thickness is of around 15 lm and the anode exhibits porosity. The expected microstructure has been achieved.…”

Section: Structural (Sem)mentioning

confidence: 99%

“…9 Anode-supported half cells (electrolyte/anode), based on BIT07/BIT07-Ni have been prepared by tape casting and co-sintered. 10 To reduce the duration and the cost of the half cells, it is possible to gather the different steps involved in the half-cell preparation: it is the reactive sintering. The composition and the microstructure of the cermet anode have been optimized to achieve an ASR value of about 0.15 Ωcm² at 700°C, under wet reducing atmosphere.…”

Section: Introductionmentioning

confidence: 99%

“…The composition and the microstructure of the cermet anode have been optimized to achieve an ASR value of about 0.15 Ωcm² at 700°C, under wet reducing atmosphere. 10 To reduce the duration and the cost of the half cells, it is possible to gather the different steps involved in the half-cell preparation: it is the reactive sintering. With this method the precursors of the powder undergo only one thermal treatment during which both the powder synthesis and its sintering are done.…”

Section: Introductionmentioning

confidence: 99%

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BaIn_0.3Ti_0.7O_2.85/BaIn_0.3Ti_0.7O_2.85‐Ni Electrolyte/Anode Half Cell for Solid Oxide Fuel Cell Prepared by Reactive Sintering

Letilly

Joubert

2012

Int J Applied Ceramic Tech

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BaIn 0.3 Ti 0.7 O 2.85 (BIT07)/BIT07-Ni electrolyte/anode half cell was prepared by reactive sintering for solid oxide fuel cells. The precursors were BaCO 3 , In 2 O 3 , and TiO 2 for electrolyte and BaCO 3 , In 2 O 3 , TiO 2 , NiO, and carbon black for anode. The bi-layers were prepared by a multilayer tape casting and co-firing method. The compositions and microstructures of the phases were studied by X-ray powder diffraction and scanning electron microscopy, respectively. The electrolytes were dense with pure perovskite phase with a thickness about 15 lm. The anodes were porous and no obvious reaction was found between NiO and the precursors of BIT07. *marika.letilly@cnrs-imn.fr

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Section: Structural (Sem)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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BaIn_0.3Ti_0.7O_2.85/BaIn_0.3Ti_0.7O_2.85‐Ni Electrolyte/Anode Half Cell for Solid Oxide Fuel Cell Prepared by Reactive Sintering

Letilly

Joubert

2012

Int J Applied Ceramic Tech

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“…In the conventional anode fabrication processes such as extrusion (8)(9)(10), isostatic pressing (11,12), tape casting (13,14), and slip casting (15,16) and so on, the pores in the anodes are generated by mixing the anode powder with pore formers and burning out the pore formers in the sintering process. The pores generated by the conventional processes are distributed in a random way in the anode substrate (17)(18)(19). The random distribution of pores results in the high tortuosity of the anode that is not favorable for the diffusion of gases in the electrodes (20).…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Electrochemical Characterization of Freeze-Cast Tubular Solid Oxide Fuel Cells

Du¹,

Persky²,

Zhao

et al. 2017

ECS Trans.

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The use of freeze casting is suggested as a solution to significantly increase the volumetric power density of Tubular SOFCs (T-SOFCs) by enhancing gas diffusivity and triple phase boundary reactions. This paper reports the fabrication and characterization of freeze cast tubular anode supports for SOFCs. Tubular anode supports were fabricated using three methods: gelation casting, center pin method, and a freeze and drain method. A dual purpose freezing and drying chamber was designed and manufactured. The effects of slurry properties and process parameters were studied with respect to the resulting microstructures. The freeze and drain method was determined to be optimum for producing highly porous tubular anode supports with hierarchical, acicular or dendritic micro-pore channels. With an optimized freeze-drying cycle, drying time was reduced significantly with minimal residual moisture in the green bodies. Additionally, the electrochemical performance of the T-SOFCs with freeze cast anode was evaluated.

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“…Due to its intrinsic properties, such as high ionic conductivity around 10 -2 S cm -1 at 700°C and good chemical stability over a wide range of oxygen partial pressures and also in CO 2 atmosphere (3)(4)(5)(6), the perovskite oxide BaIn 0.3 Ti 0.7 O 2.85 , labelled BIT07, constitutes a potential alternative to YSZ to be used as an IT-SOFC electrolyte. In addition, in comparison with fluorite-structured YSZ, its cubic perovskite structure may offer an improved compatibility with the usual perovskite-structured (or derivates) cathode materials.…”

Section: Introductionmentioning

confidence: 99%

Integration of Innovative Oxide Materials in an Intermediate Temperature Solid Oxide Fuel Cell

Morandi

Marrony

et al. 2013

ECS Trans.

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This work aims to associate two innovative promising oxide materials, the perovskite-type BaIn0.3Ti0.7O3-δ (BIT07) electrolyte and the lanthanide nickelate Pr2-xNiO4+δ cathode, in a planar anode-supported SOFC for an efficient operation at 700°C. The cell elaboration protocol will be briefly described, and the results of electrochemical characterizations of complete cells will be discussed. Adding a GDC barrier layer in between BIT07 electrolyte and the cathode decreased the polarization resistance by a factor 4, e.g. for Pr1.97NiO4+δ a competitive value of 0.29 Ω cm² is reached. It also led to increased OCV values, as a small p-type conductivity of BIT07 in oxidizing atmosphere associated with a few microscopic cracks observed in the electrolyte layer could be compensated by an electron-blocking effect of GDC and a filling of the porosities of the electrolyte. This cell was operated beyond 500 hours of under current, with a fairly high extrapolated degradation rate of 27% / kh.

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Tape casting fabrication, co-sintering and optimisation of anode/electrolyte assemblies for SOFC based on BIT07-Ni/BIT07

Cited by 19 publications

References 44 publications

BaIn_0.3Ti_0.7O_2.85/BaIn_0.3Ti_0.7O_2.85‐Ni Electrolyte/Anode Half Cell for Solid Oxide Fuel Cell Prepared by Reactive Sintering

BaIn_0.3Ti_0.7O_2.85/BaIn_0.3Ti_0.7O_2.85‐Ni Electrolyte/Anode Half Cell for Solid Oxide Fuel Cell Prepared by Reactive Sintering

Fabrication and Electrochemical Characterization of Freeze-Cast Tubular Solid Oxide Fuel Cells

Integration of Innovative Oxide Materials in an Intermediate Temperature Solid Oxide Fuel Cell

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Tape casting fabrication, co-sintering and optimisation of anode/electrolyte assemblies for SOFC based on BIT07-Ni/BIT07

Cited by 19 publications

References 44 publications

BaIn0.3Ti0.7O2.85/BaIn0.3Ti0.7O2.85‐Ni Electrolyte/Anode Half Cell for Solid Oxide Fuel Cell Prepared by Reactive Sintering

BaIn0.3Ti0.7O2.85/BaIn0.3Ti0.7O2.85‐Ni Electrolyte/Anode Half Cell for Solid Oxide Fuel Cell Prepared by Reactive Sintering

Fabrication and Electrochemical Characterization of Freeze-Cast Tubular Solid Oxide Fuel Cells

Integration of Innovative Oxide Materials in an Intermediate Temperature Solid Oxide Fuel Cell

Contact Info

Product

Resources

About

BaIn_0.3Ti_0.7O_2.85/BaIn_0.3Ti_0.7O_2.85‐Ni Electrolyte/Anode Half Cell for Solid Oxide Fuel Cell Prepared by Reactive Sintering

BaIn_0.3Ti_0.7O_2.85/BaIn_0.3Ti_0.7O_2.85‐Ni Electrolyte/Anode Half Cell for Solid Oxide Fuel Cell Prepared by Reactive Sintering