Emergent Materials, Год журнала: 2024, Номер unknown
Опубликована: Авг. 16, 2024
Язык: Английский
Fuel, Год журнала: 2023, Номер 349, С. 128771 - 128771
Опубликована: Май 25, 2023
Язык: Английский
Процитировано
11
Journal of Materials Chemistry C, Год журнала: 2024, Номер 12(21), С. 7695 - 7706
Опубликована: Янв. 1, 2024
A chemometric approach was used to investigate the phase stability and oxygen non-stoichiometry of two high entropy perovskites, namely La(CrMnFeCoNi)O 3 La(CrMnFeCoZn)O . This allows rapid screening predict desired material response.
Язык: Английский
Процитировано
4
Energy Conversion and Management, Год журнала: 2025, Номер 334, С. 119821 - 119821
Опубликована: Апрель 27, 2025
Язык: Английский
Процитировано
0
Materials, Год журнала: 2023, Номер 16(9), С. 3582 - 3582
Опубликована: Май 7, 2023
Redox materials have been investigated for various thermochemical processing applications including solar fuel production (hydrogen, syngas), ammonia synthesis, energy storage, and air separation/oxygen pumping, while involving concentrated as the high-temperature process heat source solid-gas reactions. Accordingly, these can be processed in two-step redox cycles from H2O CO2 splitting. In such cycles, metal oxide is first thermally reduced when heated under energy. Then, material re-oxidized with either or to produce H2 CO. The mixture forms syngas that used synthesis of hydrocarbon fuels. An alternative involves systems oxides/nitrides N2 based on chemical looping cycles. A nitride reacts steam form corresponding oxide. latter then recycled a nitridation reaction reducer. another process, reversible endothermal/exothermal reactions storage at high temperature. reduction corresponds charge reverse oxidation leads discharge supplying downstream process. Similar finally oxygen separation air, which results separate flows O2 both valorized, pumping absorb residual oxygen. This review deals different stoichiometric non-stoichiometric applied (H2, syngas, ammonia), gas purification. most relevant best performing acting carriers are identified described, well reactors suitable absorption, conversion, storage.
Язык: Английский
Процитировано
9
Journal of Cleaner Production, Год журнала: 2024, Номер 466, С. 142668 - 142668
Опубликована: Май 24, 2024
Язык: Английский
Процитировано
3
ACS Catalysis, Год журнала: 2024, Номер 14(19), С. 14974 - 15013
Опубликована: Сен. 25, 2024
Solar-driven thermochemical hydrogen (STCH) production represents a sustainable approach for converting solar energy into (H2) as clean fuel. This technology serves crucial feedstock synthetic fuel production, aligning with the principles of energy. The efficiency conversion process relies on meticulous tuning properties active materials, mostly commonly perovskite and fluorite oxides. Review conducts comprehensive review encompassing experimental, computational, thermodynamic kinetic property studies, primarily assessing utilization oxides in two-step reactions identifying essential attributes future research endeavors. Furthermore, this delves application machine learning (ML) density functional theory (DFT) predicting classifying materials. Through integration experimental investigations, computational modeling, ML methodologies, aspires to expedite screening optimization oxides, thus enhancing STCH processes. overarching objective is propel advancement practical systems, contributing significantly realization carbon-neutral landscape.
Язык: Английский
Процитировано
3
Nanomaterials, Год журнала: 2024, Номер 14(19), С. 1560 - 1560
Опубликована: Сен. 27, 2024
Climatic changes are reaching alarming levels globally, seriously impacting the environment. To address this environmental crisis and achieve carbon neutrality, transitioning to hydrogen energy is crucial. Hydrogen a clean source that produces no emissions, making it essential in technological era for meeting needs while reducing pollution. Abundant nature as water hydrocarbons, must be converted into usable form practical applications. Various techniques employed generate from water, with solar production—using light split water—standing out cost-effective environmentally friendly approach. However, widespread adoption of challenged by transportation storage issues, requires compressed liquefied gas tanks. Solid offers promising solution, providing an effective low-cost method storing releasing hydrogen. Solar generation splitting more efficient than other methods, uses self-generated power. Similarly, solid also attractive many ways, including efficiency cost-effectiveness. This can achieved through chemical adsorption materials such hydrides forms. These methods seem costly initially, but once established, they will become considering rising fuel prices, depletion fossil resources, advancements science technology. oxide cells (SOFCs) highly converting electrical energy, producing electricity emissions. If proper established under ambient conditions, used utilization via efficient, safe, technique. With ongoing development techniques, expected soon feasible cost-effective. review comprehensively consolidates research on storage, focusing global standards 6.5 wt% gravimetric capacity at temperatures between −40 60 °C. It summarizes various discusses current challenges storage. includes material selection, structural modifications needed optimal performance potential
Язык: Английский
Процитировано
3
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 19, 2024
The development of multifunctional electrocatalysts with high performance for electrocatalyzing urea oxidation-assisted water splitting is great significance energy-saving hydrogen production. In this work, we demonstrate a novel heteroatom engineering strategy B-doped Co as electrocatalyst the evolution reaction (HER), oxygen (OER), and oxidation (UOR). Density functional theory (DFT) results suggest that B dopant can efficiently adjust electron reconstruction exposure sites nearby facilitate transfer, resulting in an optimal d-band center along lower Gibbs free energy barrier. Ultimately, obtained B–Co exhibits pH-universal HER properties various electrolytes. A highly efficient overpotentials low 27, 163, 430 mV to −10, −100, −500 mA cm–2 1.0 M KOH, respectively, observed electrode. More importantly, UOR-assisted electrolyzer only requires voltage input 1.55 V produce current densities 50 cm–2, 200 saving-energy potential compared electrolysis, demonstrating its efficiency production industrial applications.
Язык: Английский
Процитировано
3
Journal of the American Chemical Society, Год журнала: 2024, Номер 146(20), С. 14114 - 14127
Опубликована: Май 13, 2024
The van't Hoff method is a standard approach for determining reaction enthalpies and entropies, e.g., in the thermochemical reduction of oxides, which an important process solar fuels numerous other applications. However, by analyzing oxygen partial pressure
Язык: Английский
Процитировано
2
Korean Journal of Chemical Engineering, Год журнала: 2024, Номер unknown
Опубликована: Дек. 17, 2024
Abstract Chemical looping processes are considered a promising pathway for the efficient production of various fuels and chemicals. Temporally or spatially separated reduction oxidation reaction in chemical can offer advantages such as enhancing energy efficiency, surpassing equilibrium limitations, eliminating need separation. However, efficiency process highly depends on performance oxygen carrier. Higher gas conversion increase separation higher solid reduce amount cycled The indicators related to thermodynamic properties carriers their redox kinetics. This review introduces some key articles recent achievements enhancement properties. different research strategies discussed stoichiometric non-stoichiometric carriers. Through rational design carrier material, an energy-efficient is possible.
Язык: Английский
Процитировано
2