Design of materials for solid oxide fuel cells, permselective membranes, and catalysts for biofuel transformation into syngas and hydrogen based on fundamental studies of their real structure, transport properties, and surface reactivity

Sadykov, Vladіslav; Eremeev, Nikita; Sadovskaya, E. M.; Shlyakhtina, A.V.; Pikalova, E. Yu.; Осинкин, Д.А.; Yaremchenko, A.A.

doi:10.1016/j.cogsc.2021.100558

Cited by 14 publications

(24 citation statements)

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“…In order to develop porous membranes with a low resistance to the fluid, it is vital to understand the fluid transport characteristics through the membrane. Until recently, many articles (Sadykov et al 2022;Suwanmethanond et al 2000;Bouzerara et al 2006) have been concerned about the effect of sintering aid on its permselectivity.…”

Section: Introductionmentioning

confidence: 99%

High Porous Ceramic for Oil/Water Separation – Calcite as a Sintering Aid

Abdulhameed¹,

Rahman²,

Azziz³

2023

J. Ecol. Eng.

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The effects of calcite (CaCO 3 ) as sintering aid on the preparation of local aluminum silicate microfiltration membranes were characterized in terms of morphology, thermal shrinkage behavior, porosity, permeation performance, and pure water permeate flux for the membrane. Material selection is based on availability and formability. In order to create a suspension, an organic solvent (N-methyl-2-pyrrolidone) and a polymer binder were added to a mixture of aluminum silicate and calcium carbonate. The coagulant bath consisted of water, and the suspension was extruded into a hollow fiber using a spinneret. The membrane precursor is subjected to high temperatures up to 1250 °C and this process called the sintering process gets strong hollow fiber with high mechanical stability. The addition of the CaCO 3 ) to the dispersion altered the structure of the resulting sintered membranes. The obtained finding demonstrates that carbon calcium addition to aluminum silicate has an affirmative on overall porosity in contrast to those made from purely natural aluminum silicate, as a result the aluminum silicate calcite ceramic microfiltration membrane, which had a high porosity of above 50%, shows the highest permeability of 35.8 ml m -2 •s -1 and above 97% oil rejection when operating at 0.15 MPa trans-membrane pressure in oil-in-water separation experiments. The results show that low-cost aluminum silicate-calcite component of ceramic membranes and the manufactured ceramic microfiltration membrane can handle emulsified oily wastewater.

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Section: Introductionmentioning

confidence: 99%

High Porous Ceramic for Oil/Water Separation – Calcite as a Sintering Aid

Abdulhameed¹,

Rahman²,

Azziz³

2023

J. Ecol. Eng.

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“…[1][2][3] Solid oxide fuel cells (SOFCs), which can directly convert chemical energy to electricity due to the reaction of hydrogen oxidation, are one of the promising sources of electrical energy. [4][5][6] Conventional SOFC consists of solid oxygen-ionic electrolyte and two electrodes. One of the disadvantages of conventional SOFCs is high working temperatures, above 800 C. One of the ways to reduce the working temperature of SOFC is the application of proton-conducting solid electrolytes instead of oxygen-ionic conductors.…”

Section: Introductionmentioning

confidence: 99%

“…Increasing demand for electrical power during the last decades on the one hand, and growing concern about the ecology on another, lead to the ongoing interest in developing new, efficient and ecologically friendly ways of producing electricity 1‐3 . Solid oxide fuel cells (SOFCs), which can directly convert chemical energy to electricity due to the reaction of hydrogen oxidation, are one of the promising sources of electrical energy 4‐6 . Conventional SOFC consists of solid oxygen–ionic electrolyte and two electrodes.…”

Section: Introductionmentioning

confidence: 99%

Features of the electrochemical reaction of hydrogen oxidation on the composite SrFeO ₃ ‐based anode for a protonic ceramic fuel cell

Осинкин

Antonova

Поротникова

et al. 2022

Intl J of Energy Research

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BaCeO 3 -based proton-conducting electrolytes was studied for the first time. Despite the high electronic and oxygen-ionic conductivity in the SFM-SDC, its electrochemical performance was not satisfactory, while the presence of the proton-conducting phase and exsolved nickel particles on the SFNM-BCGC electrode increased the electrochemical activity about 3 to 5 times. In series SFM-SDC, SFM-BCGC, SFNM-BCGC the polarization resistance was about 1.06, 0.54, 0.37 Ohm cm 2 at 800 C and 10.02, 3.55, 2.12 Ohm cm 2 at 600 C in wet hydrogen. The presence of sufficient proton conductivity in the electrode is supposed to be crucial for the efficient performance of the anodes in contact with proton-conducting oxides.

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“…Oxide ceramic materials such as SrVO 3 - and SrTiO 3 -based perovskites are considered as promising alternative components for anodes of hydrocarbon-fueled SOFC [ 2 , 8 , 9 , 10 , 11 ]. Perovskite-like strontium vanadate SrVO 3-δ exhibits a high metal-like electronic conductivity (1000 S/cm at 800 °C and p(O 2 ) ~10 −20 atm) [ 12 , 13 , 14 , 15 , 16 ] possibly combined with substantial oxygen-ionic conductivity implied by a non-negligible oxygen deficiency (δ = 0.08–0.10) at elevated temperatures [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…A reasonable compromise between high electrical conductivity and phase stability can be reached by balancing the fractions of vanadium and titanium cations in the B sublattice [ 11 , 34 ]. In particular, SrV 1- y Ti y O 3-δ solid solutions with moderate titanium content (0.3 ≤ y ≤ 0.5) showed electrical conductivity ≥ 20 S/cm at temperatures ≤ 900 °C, combined with a phase stability domain extended up to p(O 2 ) of at least 10 −11 atm at 900 °C [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Ni-Sr(V,Ti)O3-δ Fuel Electrodes for Solid Oxide Fuel Cells

2021

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A series of strontium titanates-vanadates (STVN) with nominal cation composition Sr1-xTi1-y-zVyNizO3-δ (x = 0–0.04, y = 0.20–0.40 and z = 0.02–0.12) were prepared by a solid-state reaction route in 10% H2–N2 atmosphere and characterized under reducing conditions as potential fuel electrode materials for solid oxide fuel cells. Detailed phase evolution studies using XRD and SEM/EDS demonstrated that firing at temperatures as high as 1200 °C is required to eliminate undesirable secondary phases. Under such conditions, nickel tends to segregate as a metallic phase and is unlikely to incorporate into the perovskite lattice. Ceramic samples sintered at 1500 °C exhibited temperature-activated electrical conductivity that showed a weak p(O2) dependence and increased with vanadium content, reaching a maximum of ~17 S/cm at 1000 °C. STVN ceramics showed moderate thermal expansion coefficients (12.5–14.3 ppm/K at 25–1100 °C) compatible with that of yttria-stabilized zirconia (8YSZ). Porous STVN electrodes on 8YSZ solid electrolytes were fabricated at 1100 °C and studied using electrochemical impedance spectroscopy at 700–900 °C in an atmosphere of diluted humidified H2 under zero DC conditions. As-prepared STVN electrodes demonstrated comparatively poor electrochemical performance, which was attributed to insufficient intrinsic electrocatalytic activity and agglomeration of metallic nickel during the high-temperature synthetic procedure. Incorporation of an oxygen-ion-conducting Ce0.9Gd0.1O2-δ phase (20–30 wt.%) and nano-sized Ni as electrocatalyst (≥1 wt.%) into the porous electrode structure via infiltration resulted in a substantial improvement in electrochemical activity and reduction of electrode polarization resistance by 6–8 times at 900 °C and ≥ one order of magnitude at 800 °C.

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Design of materials for solid oxide fuel cells, permselective membranes, and catalysts for biofuel transformation into syngas and hydrogen based on fundamental studies of their real structure, transport properties, and surface reactivity

Cited by 14 publications

References 82 publications

High Porous Ceramic for Oil/Water Separation – Calcite as a Sintering Aid

High Porous Ceramic for Oil/Water Separation – Calcite as a Sintering Aid

Features of the electrochemical reaction of hydrogen oxidation on the composite SrFeO ₃ ‐based anode for a protonic ceramic fuel cell

Development of Ni-Sr(V,Ti)O3-δ Fuel Electrodes for Solid Oxide Fuel Cells

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Design of materials for solid oxide fuel cells, permselective membranes, and catalysts for biofuel transformation into syngas and hydrogen based on fundamental studies of their real structure, transport properties, and surface reactivity

Cited by 14 publications

References 82 publications

High Porous Ceramic for Oil/Water Separation – Calcite as a Sintering Aid

High Porous Ceramic for Oil/Water Separation – Calcite as a Sintering Aid

Features of the electrochemical reaction of hydrogen oxidation on the composite SrFeO 3 ‐based anode for a protonic ceramic fuel cell

Development of Ni-Sr(V,Ti)O3-δ Fuel Electrodes for Solid Oxide Fuel Cells

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Features of the electrochemical reaction of hydrogen oxidation on the composite SrFeO ₃ ‐based anode for a protonic ceramic fuel cell