Optimal adsorption energy for physical hydrogen storage

What is adsorption based solid hydrogen storage?

The adsorption-based solid hydrogen storage has attracted increasing attentions owing to high safety, large storage volumetric density, and fast adsorption and desorption kinetics [ 9, 10 ]. Carbon nanotubes [ 11] and metal-organic frameworks (MOFs) [ 12] can store hydrogen via physisorption or chemisorption.

What is the optimal adsorption duration?

Optimal adsorption duration depended fin configurations are identified through machine learning and genetic algorithm. At the adsorption duration of 400 s, the hydrogen storage amount is augmented by 12.8%. Adsorption hydrogen storage paves an alternative way for reliable hydrogen storage.

What is the maximum storage capacity of hydrogen adsorption?

Hydrogen adsorption measurements confirmed an excess uptake of about 5 wt%, therefore reaching already values comparable to the best activated carbons, i.e., 4.5 wt% on activated carbon . At 77 K and high pressures above 20 bar, the maximum storage capacities are closely related to the specific surface area accessible to H 2 molecules.

What is the hydrogen storage amount of a 10-finned adsorption bed?

The hydrogen storage amount for 10-finned bed at a dimensionless height of 0.8 is 5.2% more than that at a dimensionless height of 0.2 at the adsorption duration of 800 s. The hydrogen storage amount of the 10-finned bed is higher than that of the 5-finned adsorption bed due to better heat and mass transfer performance.

Can adsorbents enhance hydrogen storage?

This paper reviews recent advances in physically adsorbed hydrogen storage materials, emphasizing solid-state options like carbon adsorbents, metal-organic frameworks, covalent organic frameworks, graphene, and zeolites. These materials have been synthesized and modified to enhance hydrogen storage.

Can physical adsorption achieve fast reversible hydrogen storage?

Author to whom correspondence should be addressed. Physical adsorption remains a promising method for achieving fast, reversible hydrogen storage at both ambient and cryogenic conditions.