Niobium-Doped Strontium Titanates as SOFC Anodes

Blennow, Peter; Wallenberg, L. R.; Mogensen, Mogens Bjerg

doi:10.1002/9780470339534.ch20

Cited by 3 publications

(4 citation statements)

References 21 publications

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“…The infiltration procedure ensured a uniform coating of submicron-sized particles on all the surfaces of the porous structure. Further details on the cell fabrication can be found in the patent literature [8].…”

Section: Symmetrical Cell Preparationmentioning

confidence: 99%

Detailed impedance characterization of a well performing and durable Ni:CGO infiltrated cermet anode for metal-supported solid oxide fuel cells

Nielsen

Klemensø

Blennow

2012

Journal of Power Sources

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Section: Symmetrical Cell Preparationmentioning

confidence: 99%

Detailed impedance characterization of a well performing and durable Ni:CGO infiltrated cermet anode for metal-supported solid oxide fuel cells

Nielsen

Klemensø

Blennow

2012

Journal of Power Sources

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“…After co-sintering, the electrocatalytically active phase was infiltrated into the porous structure (see details in the next section) to generate the fuel electrode. Further details of cell fabrication have been published elsewhere [17]. A similar fabrication route was used to make symmetrical cells comprising of a thick electrolyte layer sandwiched between identical cermet layers.…”

Section: Sample Fabricationmentioning

confidence: 99%

“…This paper presents the development of metal supported fuel cells with a novel design including an alternative anode structure [17] to circumvent the discussed challenges of interdiffusion in the Ni-Fe-Cr system and Ni coarsening during operation. The cell design is based on porous and highly electronically conducting layers into which electrocatalytically active materials (CGO and minor amounts of Ni) are infiltrated after sintering.…”

Section: Introductionmentioning

confidence: 99%

Planar Metal‐Supported SOFC with Novel Cermet Anode

et al. 2011

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Metal‐supported solid oxide fuel cells are expected to offer several potential advantages over conventional anode (Ni‐YSZ) supported cells. For example, increased resistance against mechanical and thermal stresses and a reduction in material costs. When Ni‐YSZ based anodes are used in metal supported SOFC, elements from the active anode layer may inter‐diffuse with the metallic support during sintering. This work illustrates how the inter‐diffusion problem can be circumvented by using an alternative anode design based on porous and electronically conducting layers, into which electrocatalytically active materials are infiltrated after sintering. The paper presents the electrochemical performance and durability of the novel planar metal‐supported SOFC design. The electrode performance on symmetrical cells has also been evaluated. The novel cell and anode design shows a promising performance and durability at a broad range of temperatures and is especially suitable for intermediate temperature operation at around 650 °C.

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“…For this reason measurements on compositions with 0.35 mol Fe are here reported. Recent applications of strontium titanate based materials have also been reported on application as anode in solid oxide fuel cell devices due to their electrical behavior and the mechanical compatibility with the yttriastabilized zirconia solid electrolyte [10,11]. CaTiO 3 (CTO), which has a distorted perovskite structure with orthorhombic symmetry at room temperature, shows also the ability of forming solid solutions with a large number of oxides and, therefore, many compounds have been synthesized for different applications [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Strontium and Calcium Titanate Polycrystalline Powders by a Modified Polymeric Precursor Technique

Muccillo¹,

Carmo²

2012

MSF

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SrTi0,65Fe0,35O3-δ, Ca0,5Sr0,5Ti0,65Fe0,35O3-δ, CaTi0,65Fe0,35O3-δceramic powders were synthesized by the polymeric precursor technique using CaCO3, SrCO3, C12H28O4Ti and Fe (NO3)3.9H2O. After calcination, each powder was heat treated at temperatures chosen according to data collected on thermogravimetric-differential thermal analysis experiments. The compositions were analyzed by X-ray diffraction for structural phase evaluation (either perovskite cubic or orthorhombic), laser scattering for determination of particle size distribution and average particle size, transmission electron microscopy (TEM) for observation of particle shape and average true size. Pressed powders sintered at 1250°C were analyzed by X-ray diffraction and X-ray fluorescence; their surfaces were observed by scanning probe microscopy (SPM) for topographical analysis of grains and grain boundaries. TEM results show that the powders consist of agglomerated nanoparticles. Sr-based compounds have cubic perovskite phases whereas Ca-based compounds are orthorhombic. SPM images show intergranular features which might be responsible for reported blocking of charge carriers observed in impedance spectroscopy diagrams.

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Niobium-Doped Strontium Titanates as SOFC Anodes

Cited by 3 publications

References 21 publications

Detailed impedance characterization of a well performing and durable Ni:CGO infiltrated cermet anode for metal-supported solid oxide fuel cells

Detailed impedance characterization of a well performing and durable Ni:CGO infiltrated cermet anode for metal-supported solid oxide fuel cells

Planar Metal‐Supported SOFC with Novel Cermet Anode

Synthesis and Characterization of Strontium and Calcium Titanate Polycrystalline Powders by a Modified Polymeric Precursor Technique

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