Comprehensive Thermodynamic Performance Evaluation of a Novel Dual-Shaft Solid Oxide Fuel Cell Hybrid Propulsion System

Aerospace, Год журнала: 2025, Номер 12(1), С. 59 - 59

Опубликована: Янв. 16, 2025

With the rapid growth of air travel, reducing carbon emissions in aviation is imperative. Electric aircraft play a key role achieving sustainable aviation, especially for large civil aircraft, where emissions, improving fuel efficiency, and enabling flexible power regulation are essential. This study proposes dual-shaft, separated-exhaust cell hybrid propulsion system (HAPS), using solid oxide (SOFC) to replace conventional turbine-driven compressor. The independent speed control high- low-pressure spools realized via distribution system. A thermodynamic model developed, performance evaluations, including parametric, exergy, sensitivity analyses, conducted. At design point, delivers 36.304 kN thrust, 16.775 g/(kN·s) specific consumption, 15.931 MW SOFC power, 54.759% efficiency. exergy analysis highlights optimization components like heat exchanger fan reduce energy losses. reveals that spool speeds utilization significantly impact performance. findings provide valuable insights into optimizing strategies offer novel, efficient, low-carbon solution supporting industry’s transition towards sustainability.

Язык: Английский

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Boosting Ionic Conductivity of Y2O3 co-doped ZrO2 – CeO2 Electrolyte of SOFCs by Successive Thermal-Treatments

Ceramics International, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

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Direct Salt Precursor Mechanochemical Synthesis for La_1–xSr_xTi_1–yMn_yO_3±δ Perovskite Nanomaterials as Solid Oxide Oxygen Electrodes

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

Implementation of mechanochemical activation on the solid-state synthesis perovskite metal oxides from salt precursors has been investigated for preparation La1–xSrxTi1–yMnyO3±δ electroceramics. The morphology, crystal structure, conductivity, and high-temperature characteristics resulting powders have studied. All compounds were obtained as pure phase nanomaterials, with distorted symmetry regard to elemental doping annealing temperature. was achieved after high temperature solely in cases where implemented, while other synthetic procedures tested (sol–gel conventional solid-state) produced mainly mixed oxides, indicating potential solvent-free direct precursor proposed herein. electrochemical behavior pure-phase oxide perovskites screen-printed electrodes commercial YSZ electrolyte disks observed EIS LSV at 850 °C under air flow, electrical properties hydrogen gas flow pelleted samples. Results reveal that mechanochemically synthesized LSTO comparable equivalent LSM, 0.89 A·cm–2 1.75 V showcasing its both oxygen toward symmetrical reversible SOCs.

Язык: Английский

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Overview of Recent Advances in Rare-Earth High-Entropy Oxides as Multifunctional Materials for Next-Gen Technology Applications

Molecules, Год журнала: 2025, Номер 30(5), С. 1082 - 1082

Опубликована: Фев. 27, 2025

Rare-earth high-entropy oxides are a new promising class of multifunctional materials characterized by their ability to stabilize complex, multi-cationic compositions into single-phase structures through configurational entropy. This feature enables fine-tuning structural properties such as oxygen vacancies, lattice distortions, and defect chemistry, making them for advanced technological applications. While initial research primarily focused on catalytic performance in energy environmental applications, recent demonstrated potential optoelectronics, photoluminescent materials, aerospace technologies. Progress synthesis techniques has provided control over particle morphology, composition, engineering, enhancing electronic, thermal, mechanical properties. exhibit tunable bandgaps, exceptional thermal stability, superior resistance phase degradation, which positions next-generation materials. Despite these advances, challenges remain scaling up production, optimizing specific understanding the fundamental mechanisms governing multifunctionality. review provides comprehensive analysis developments rare-earth relatively still underrated material future.

Язык: Английский

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Recent Advancements of Spinel Oxide Materials in Energy and Fuel Applications

Energy & Fuels, Год журнала: 2025, Номер unknown

Опубликована: Апрель 8, 2025

Язык: Английский

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Sinterability and electrical characterization of BaCe0.9Y0.1O3-δ: A discussion on intrinsic liquid-phase mechanisms

Processing and Application of Ceramics, Год журнала: 2025, Номер 19(1), С. 84 - 93

Опубликована: Янв. 1, 2025

Yttrium-doped barium cerate (BaCe0.9Y0.1O3-?, BCY) powders were synthesized via two powder processing routes: i) the conventional solid-state reaction and ii) modified wet chemical method. The influence of sintering schedules on densification mechanisms, microstructural evolution electrical properties was systematically investigated. results indicate that intrinsic liquid-phase assisted occurs in samples prepared by both routes, but it is more prominent for low-sinterability reaction, leading to a uniform microstructure conductivity less dependent conditions. Electrical measurements revealed ceramics route exhibited superior proton at lower temperatures, though with significant variability depending competition between significantly impacts performance. These findings highlight critical role routes liquid phase tailoring optimizing BCY electrochemical applications.

Язык: Английский

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Electrochemical energy conversion

Elsevier eBooks, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

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Statistical modeling of solution combustion synthesis for Ni/A2O3 catalyst in methane decomposition to hydrogen and carbon nanofibers

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 89, С. 1342 - 1353

Опубликована: Окт. 4, 2024

Язык: Английский

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Alternative Oxide-Based Materials for Electrochemical and Catalytic Applications: A Review

Опубликована: Авг. 20, 2024

Recent trends concerning hydrogen as a fuel of the future and problems related to its production, storage utilization increase demand for efficient technologies these problems. A large part such is application advanced materials based on various complex oxides which are used catalysts transformation into syngas, membranes with selective permeability syngas components solid oxide cells/electrolyzers well many other applications in energy, electrochemistry catalysis. Such typically solutions perovskite fluorite structures or their derivatives. Attention also paid spinel, apatite, mayenite, sheelite, fergusonite structures. The above-mentioned continuously studied order modify optimize functional properties. On hand, classes (weberites, monazites, etc.) recently discovered considered candidate aforementioned due specific properties great potential improvement. In this review, some considered.

Язык: Английский

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Sintering Aids Strategies for Improving LSGM and LSF Materials for Symmetrical Solid Oxide Fuel Cell

Applied Sciences, Год журнала: 2024, Номер 14(19), С. 8923 - 8923

Опубликована: Окт. 3, 2024

R&D in the area of high-temperature symmetrical electrochemical devices is needed to meet challenges hydrogen energy. In present study, effect Fe2O3 and CuO sintering aids on properties highly conductive solid electrolyte La0.8Sr0.2Ga0.8Mg0.2O3−δ La0.6Sr0.4FeO3−δ electrodes for oxide fuel cells was investigated. It shown that use leads an improvement grain boundary conductivity allows us reduce temperature obtain a dense with same level conductivity. first time nature affect electrode activity differently depending gas environment (air or hydrogen). On basis analysis impedance spectra by distribution relaxation times, assumptions were made about rate-determining steps oxidation oxygen reduction. can change temperature. found among studied electrodes, 3 wt.% sintered at 1050 °C optimal terms oxidizing reducing atmospheres.

Язык: Английский

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