Nanostructured cathode thin films with vertically-aligned nanopores for thin film SOFC and their characteristics

Yoon, Jungho; Araujo, Roy A.; Grunbaum, Nicolás; Baqué, Laura; Serquis, A.; Caneiro, A.; Zhang, Xinghang; Wang, Haiyan

doi:10.1016/j.apsusc.2007.07.053

Cited by 60 publications

(46 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Equations (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19) can be used to predict the effective properties of the composite electrode using the mono-particle size distribution of each type of material. Equations (20)(21)(22)(23)(24)(25)(26)(27)(28)(29) can be used to predict the effective properties of the composite electrode using the poly-dispersed particle sizes.…”

Section: Resultsmentioning

confidence: 99%

“…In the past decades, parametric studies for the composite electrodes have been widely conducted by many researchers through experiments [5,6], random packing reconstruction methods [7][8][9] and percolation theory [10][11][12]: (i) the experimental methods rely primarily on the stereological methods [5,13,14]. Recently, the focused ion-beam scanning electron microscopy has been attempted to obtain the high resolution 3D image of a composite electrode [5,6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Percolation Theory in Solid Oxide Fuel Cell Composite Electrodes with a Mixed Electronic and Ionic Conductor

Chen

Zhang

et al. 2013

Energies

View full text Add to dashboard Cite

Percolation theory is generalized to predict the effective properties of specific solid oxide fuel cell composite electrodes, which consist of a pure ion conducting material (e.g., YSZ or GDC) and a mixed electron and ion conducting material (e.g., LSCF, LSCM or CeO 2 ). The investigated properties include the probabilities of an LSCF particle belonging to the electron and ion conducting paths, percolated three-phase-boundary electrochemical reaction sites, which are based on different assumptions, the exposed LSCF surface electrochemical reaction sites and the revised expressions for the inter-particle ionic conductivities among LSCF and YSZ materials. The effects of the microstructure parameters, such as the volume fraction of the LSCF material, the particle size distributions of both the LSCF and YSZ materials (i.e., the mean particle radii and the non-dimensional standard deviations, which represent the particle size distributions) and the porosity are studied. Finally, all of the calculated results are presented in non-dimensional forms to provide generality for practical application. Based on these results, the relevant properties can be easily evaluated, and the microstructure parameters and intrinsic properties of each material are specified.Keywords: solid oxide fuel cell; percolation theory; mixed electron and ion conductor; LSCF; coordination number; three-phase-boundary sites; electrochemically active sites

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Percolation Theory in Solid Oxide Fuel Cell Composite Electrodes with a Mixed Electronic and Ionic Conductor

Chen

Zhang

et al. 2013

Energies

View full text Add to dashboard Cite

show abstract

“…It is gaining increasing attention for the fabrication of SOFC materials, due to its capability of depositing high quality films of complex oxides (17,18). Recently, a number of studies have been carried out on textured BZY thin films grown by PLD (3,5,19).…”

Section: Introductionmentioning

confidence: 99%

Yttrium Doped Barium Cerate and Zirconate Heterostructures: Deposition and Electrochemical Characterization

et al. 2013

View full text Add to dashboard Cite

Epitaxial heterostructures consisting of an yttrium doped barium cerate (BCY) layer sandwiched between two yttrium doped barium zirconate (BZY) thin layers have been deposited on insulating (001) MgO substrates by pulsed laser deposition. The first BZY layer was aimed at improving the lattice match with the MgO substrate, the second at protecting the BCY layer. Ionic conductivity has been studied in the 300 -600°C temperature range as a function of the BCY thickness. Due to the absence of blocking grain boundaries, heterostructures showed a conductivity larger than that of BCY pellets sintered under optimized conditions..

show abstract

“…Besides, it allows shaping the cathode with special nano-structured morphologies that improve the element performance. An excellent example are the vertically aligned nano-pores (VANP), which enhances Oxygen-gas phase diffusivity [24,25].…”

Section: Sample Preparation and Interphases Characteristics Typesmentioning

confidence: 99%

Electrode/Electrolyte Interphase Characterization in Solid Oxide Fuel Cells

Soldati¹,

Baqué²,

Troiani³

et al. 2012

Hydrogen Energy - Challenges and Perspectives

View full text Add to dashboard Cite

Nanostructured cathode thin films with vertically-aligned nanopores for thin film SOFC and their characteristics

Cited by 60 publications

References 15 publications

Percolation Theory in Solid Oxide Fuel Cell Composite Electrodes with a Mixed Electronic and Ionic Conductor

Percolation Theory in Solid Oxide Fuel Cell Composite Electrodes with a Mixed Electronic and Ionic Conductor

Yttrium Doped Barium Cerate and Zirconate Heterostructures: Deposition and Electrochemical Characterization

Electrode/Electrolyte Interphase Characterization in Solid Oxide Fuel Cells

Contact Info

Product

Resources

About