The effect of Li-doping and doping methods to hydrogen storage capacities of some carbonaceous materials

Fuel, Journal Year: 2025, Volume and Issue: 396, P. 135280 - 135280

Published: April 10, 2025

Language: Английский

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Molecular mechanisms of hydrogen leakage and blockage in kaolinite nano-cracks for underground hydrogen storage

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(1)

Published: Jan. 1, 2025

Underground H2 storage in saline aquifers is critical for advancing the global energy transition through large-scale utilization. However, cyclic stress-induced nano-cracks caprocks may lead to leakage due small size and high diffusivity of H2. This study employed molecular dynamics simulations exploring occurrence states H2O near kaolinite surfaces, particularly focusing on when a nano-crack formed. We examined effects basal surfaces (gibbsite siloxane), water content, cushion gases (CH4 CO2). In gibbsite aquifers, formed adsorption layers; while siloxane it appeared as droplets or bridges. Upon formation, initial occurred but halted once number blocked crack. was generally higher than except at low content. Increased content significantly reduced by rapidly achieving number, whereas effect depended distribution. Cushion effectively mitigated leakage. CO2 outperformed CH4 their varied based hindering entry into crack, not only impeded also assisted blocking Our analysis density distributions, dynamics, configurations, excess chemical potentials provides insights blockage mechanisms aqueous environments caprock minerals, facilitating evaluation feasibility aquifers.

Language: Английский

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Modeling the diffusivity of hydrogen and the associated cushion gas in depleted hydrocarbon reservoir caprocks

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 105, P. 248 - 257

Published: Jan. 23, 2025

Language: Английский

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H2 and CH4 adsorption on coal: Insights from experiment and mathematical model

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 120, P. 542 - 557

Published: March 29, 2025

Language: Английский

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H2 adsorption on Li and Ca functionalized few layers graphene: Insights from grand canonical Monte Carlo studies

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 79, P. 238 - 247

Published: July 5, 2024

Language: Английский

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