A review of salt mechanical behavior, stability and site selection of underground hydrogen storage in salt cavern-Moroccan case

Journal of Energy Storage, Год журнала: 2025, Номер 114, С. 115813 - 115813

Опубликована: Фев. 15, 2025

Язык: Английский

---

Hydrogen storage in depleted gas reservoirs with carbon dioxide as a cushion gas: Exploring a lateral gas separation strategy to reduce gas mixing

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 102, С. 1116 - 1129

Опубликована: Янв. 14, 2025

Язык: Английский

---

Optimization of the Design of Underground Hydrogen Storage in Salt Caverns in Southern Ontario, Canada

Mining, Год журнала: 2025, Номер 5(1), С. 9 - 9

Опубликована: Янв. 22, 2025

With the issue of energy shortages becoming increasingly serious, need to shift sustainable and clean sources has become urgent. However, due intermittent nature most renewable sources, developing underground hydrogen storage (UHS) systems as backup solutions offers a promising solution. The thick regionally extensive salt deposits in Unit B Southern Ontario, Canada, have demonstrated significant potential for supporting such systems. Based on stratigraphy statistics unit B, this study investigates feasibility stability caverns, focusing effects cavern shape, geometric parameters, operating pressures. Three shapes—cylindrical, cone-shaped, ellipsoid-shaped—were analyzed using numerical simulations. Results indicate that cylindrical caverns with diameter-to-height ratio 1.5 provide best balance between capacity structural stability, while ellipsoid-shaped offer reduced stress concentration but less space, posing practical challenges during leaching. results also optimal pressure range maintaining minimizing leakage lies 0.4 0.7 times vertical situ stress. Higher pressures increase lead greater stress, displacements, risks, lower leads internal extrusion tendency walls. Additionally, rate drops maximum working pressure, yet total mass keeps growing trend.

Язык: Английский

---

Mechanistic Studies of H2 Adsorption and Diffusion in Low-Rank Coals: A Discussion on Geologic Hydrogen Storage

Applied Sciences, Год журнала: 2025, Номер 15(7), С. 3932 - 3932

Опубликована: Апрель 3, 2025

An in-depth investigation of the adsorption and diffusion mechanism hydrogen in low-rank coals is great significance for optimizing technical path geological storage improving efficiency storage. Two kinds coal samples with a low metamorphic degree from Foran Coal Mine Sihe were used as adsorbents, molecular structure determined experimentally, H2 molecules was analyzed atomic level based on numerical simulation. It found that aliphatic carbon mainly links aromatic ring form branched chain exists an ring, side chain, or bridging carbon, lower deterioration coal, longer length alkane structure. The present polybenzene can provide more effective sites enhance by High specific surface area porosity will samples, while presence oxygen-containing functional groups strengthen interaction between microporous H2. These findings theoretical support application

Язык: Английский

---

A Review on Electrochemical Water Splitting Electrocatalysts for Green H₂ Production: Unveiling the Fundamentals and Recent Advances

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Green H2 production via electrochemical water splitting has emerged as a pivotal solution for achieving sustainable energy future. This Review delves into the fundamentals of splitting, focusing on O2 evolution reaction (OER) and (HER), focuses critical role electrocatalysts in these processes. Precious metals such paltinum iridium remain benchmarks catalytic performance; however, their scarcity high cost necessitate development alternative materials. Recent advances Earth-abundant catalysts, including transition-metal oxides, carbides, nitrides, sulfides, have shown promise balancing activity, durability, affordability. The integration nanostructuring techniques computational modeling enabled design catalysts with enhanced active site exposure electronic properties. Furthermore, highlights challenges material degradation, overpotentials, gas crossover, along potential solutions like protective coatings, bifunctional advanced electrolyzer designs. Future prospects emphasize artificial intelligence, hybrid systems, manufacturing accelerating progress. comprehensive review underscores significance bridging fundamental research technological innovations to scale up green hydrogen production, addressing demands while mitigating environmental impacts.

Язык: Английский

---

Geological hydrogen storage: Current status, research frontiers, and the path to large-scale deployment

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 134, С. 54 - 63

Опубликована: Май 3, 2025

Язык: Английский

---