In pursuing a carbon–neutral world, hydrogen’s environmentally friendly attributes and high energy density make it a

promising fossil fuel alternative. The main challenge in using hydrogen as a clean energy source is the need for dependable

storage technology. Material-based solid-state systems are favored for their reliability over conventional storage methods

and for meeting the DoE, USA targets. Carbon nanotube-based materials stand out among material-based hydrogen storage

systems due to their unique advantages over others. High surface area, mesoporous structure, tunable features, honeycomb

structure, chemical stability, low mass density, hydrogen molecule dissociation and an easy synthesis process are only a few

of its distinctive qualities. Many material-based hydrogen storage systems rely on chemisorption, lacking reversibility and

necessitating energy for hydrogen release. In contrast, CNT-based materials predominantly employ physisorption, merely

adsorbing hydrogen without chemical bonding. This approach allows for more effi cient hydrogen release, ensuring superior

stability and reversibility compared to other material-based systems. This review paper assesses the hydrogen storage capabilities,

diff erent properties and rapid adsorption/desorption kinetics of carbon nanotube-based materials at lower temperatures.

It discusses preparation methods and infl uencing mechanisms and explores both pristine and modifi ed CNTs’ potential for

hydrogen storage alongside safety considerations and future prospects.