Electrochemical vapor deposition of stabilized zirconia and interconnection materials for solid oxide fuel cells☆

Schoonman, J.; Dekker, J.P.; Broers, J.W.; Kiwiet, N.J.

doi:10.1016/0167-2738(91)90229-5

Cited by 74 publications

(19 citation statements)

References 18 publications

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“…Assuming that the dependence of D chem previously shown in Figs. 4 and 5. net current flow along the diffusional direction (perpendic-When the above defect chemical analyses are extended ular to the flow of electric current for the conductivity into a high Po 2 region (log Po 2 Ͼ Ϫ6) which is not covered measurement) is zero and that the electronic transference in the present investigation, the chemical diffusion coeffinumber is unity, the ambipolar diffusion treatment (33) cient becomes nearly equal to the vacancy diffusion coeffigives the relation (15, 34,35) cient since the enhancement factor asymptotically ap-…”

Section: Figmentioning

confidence: 96%

Electrical Conductivity and Chemical Diffusion Coefficient of Strontium-Doped Lanthanum Manganites

Yasuda

Hishinuma

1996

Journal of Solid State Chemistry

155

102

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Section: Figmentioning

confidence: 96%

Electrical Conductivity and Chemical Diffusion Coefficient of Strontium-Doped Lanthanum Manganites

Yasuda

Hishinuma

1996

Journal of Solid State Chemistry

155

102

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“…(16), the oxygen permeation current density is inversely proportional to the membrane thickness when the oxygen permeation is rate determined by the diffusion inside the perovskite. It results in a parabolic rate law for the growth of perovskite layers by the EVD method [27]. The oxygen permeation becomes independent of the membrane thickness when limited exclusively by the surface oxygen exchange process.…”

Section: Discussionmentioning

confidence: 99%

Oxygen permeation modelling of perovskites

et al. 1993

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A point defect model was used to describe the oxygen nonstoichiometry of the perovskites Lao.75Sro.25CrO3, Lao.9Sro.~FeO3, Lao.9Sro.~CoO3 and Lao.sSro.2MnOa as a function of the oxygen partial pressure. Form the oxygen vacancy concentration predicted by the point defect model, the ionic conductivity was calculated assuming a vacancy diffusion mechanism. The ionic conductivity was combined with the Wagner model for the oxidation of metals to yield an analytical expression for the oxygen permeation current density as a function of the oxygen partial pressure gradient. A linear boundary condition was used to show the effect of a limiting oxygen exchange rate at the surface.

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“…The spinel structure of MgCr2O4 represents a cubic structure belonging to the Fd3m space group, in which magnesium and chromium ions are occupied in hexagonal and octagonal molecular shapes 14 . Although the metallurgical use of magnesium oxide is to provide resistance to decay and to create a brilliant shine as a component in alloys, such as stainless steel and chrome plating, and to serve as a catalyst in applications, MgCr2O4 is also used as a catalyst for the oxidation of propene and propane 15 . To overcome this limitation, in this study, nano-sized MgCr2O4was prepared by using a sol-gel synthesis process, as shown in Scheme 1.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and optical band gap of Pirochromite (MgCr2O4) Nanoparticles by Stearic Acid Sol-Gel Method

Jafarnejad¹,

Khanahmadzadeh²,

Ghanbary³

et al. 2016

10.5267/j.ccl

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Pirochromite (MgCr2O4) nanoparticles were successfully prepared in this study. During synthesis of the pirochromite nanoparticles, a sol-gel was prepared by using magnesium acetate and potassium dichromate as magnesium and chromium sources and by using stearic acid as the network. Infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM), and energy-dispersive X-ray spectroscopy (EDX) were used for the elemental analysis, and diffuse reflectance spectroscopy (DRS) and vibrating sample magnetometer (VSM) were used in order to identify, provide a fuzzy diagnosis, and determine the size and morphology of the particles, as well as to analyze the optical and magnetic properties of the particles. The particle size of MgCr2O4 nanoparticles was observed to fall within a range of 39 nm-71 nm.

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Electrochemical vapor deposition of stabilized zirconia and interconnection materials for solid oxide fuel cells☆

Cited by 74 publications

References 18 publications

Electrical Conductivity and Chemical Diffusion Coefficient of Strontium-Doped Lanthanum Manganites

Electrical Conductivity and Chemical Diffusion Coefficient of Strontium-Doped Lanthanum Manganites

Oxygen permeation modelling of perovskites

Synthesis, characterization and optical band gap of Pirochromite (MgCr2O4) Nanoparticles by Stearic Acid Sol-Gel Method

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