an efficient procedure is presented for the evaluation of solid oxide fuel cell (sofc) anode microstructure triple phase boundary length (tpbl). triple phase boundary- the one that is common between three phases of the microstructure- has a great influence on the overall efficiency of sofc because all electrochemical reactions of anode take place in its vicinity. therefore, evaluation of tpbl f...

An efficient procedure is presented for the evaluation of solid oxide fuel cell (SOFC) anode microstructure triple phase boundary length (TPBL). Triple phase boundary- the one that is common between three phases of the microstructure- has a great influence on the overall efficiency of SOFC because all electrochemical reactions of anode take place in its vicinity. Therefore, evaluation of TP...

An efficient procedure is presented for the evaluation of solid oxide fuel cell (SOFC) anode microstructure triple phase boundary length (TPBL). Triple phase boundary- the one that is common between three phases of the microstructure- has a great influence on the overall efficiency of SOFC because all electrochemical reactions of anode take place in its vicinity. Therefore, evaluation of TP...

An analytical equation is derived for total triple phase boundary length per unit volume (LTPB) in an isotropic uniform random microstructure of LSM/YSZ composite cathode. The equation is applicable to YSZ and LSM particles of any convex shapes and size distributions. The equation explicitly relates LTPB to the shapes, mean sizes, coefficient of variation (a measure of the spread in a size dist...

A method is described for quantitatively analyzing the level of interconnectivity of solid-oxide fuel cell electrode phases. The method was applied to the three-dimensional microstructure of a Ni-Y2O3-stabilized ZrO2 (Ni-YSZ) anode active layer measured by focused ion beam scanning electron microscopy. Each individual contiguous network of Ni, YSZ, and porosity was identified and labeled accord...

Understanding the reaction pathways for hydrogen oxidation (HOR) and oxygen reduction (ORR) is key to design electrodes solid acid fuel cells (SAFCs). In general, electrochemical reactions of a cell are considered occur at triple-phase boundary where an electrocatalyst, electrolyte gas phase in contact. this concept, diffusion processes intermediates from catalyst remain unconsidered. Here, we ...

We use geometrical arguments based on grain boundary symmetries to introduce crystalline interfacial energies for interfaces in polycrystalline thin lms with a cubic lattice. These crystalline energies are incorporated into a multi{phase eld model. Our aim is to apply the multi{phase eld method to describe the evolution of faceted grain boundary triple junctions in epitaxially growing microstru...

background the changes in the active phase length may lead to dangerous consequences for the mother as well as the baby. the primary aim of this study was to evaluate the effective factors related to the length of active phase in women who admitted in 22 bahman hospital in masjid solayman, iran. material and methods a crosssectional study was carried out on 390 women in the reproductive age who...

The impact of La2Zr2O7 !LZO" on interfacial resistance !Rp" at the La0.78Sr0.20MnO3−!/yttria-stabilized zirconia interface was studied upon isothermal sintering at 1200°C for 2–25 h. Quantification of triple phase boundary length was performed by applying focused ion beam/scanning electron microscopy !FIB/SEM" serial-sectioning techniques and classical stereology. Electrochemical impedance spec...