Issue 3, 2023

Hydrogen sorption on microporous carbon/sulfur nanocomposite systems

Abstract

Encapsulating sulfur in single-walled carbon nanotubes (S@SWCNTs) produces a composite material hitherto unexplored for hydrogen storage. Interactions between sulfur and carbon nanotubes modify the electronic properties of the composite, thus offering methods for improving hydrogen sorption in carbon nanotubes. Here we demonstrate that S@SWCNT composites can provide 35% greater gravimetric excess adsorbed hydrogen per unit specific surface area, and improved hydrogen uptake at lower pressures (<2 MPa), indicating higher enthalpies of adsorption. Through semi-empirical modelling of high-pressure gas sorption isotherms, it was determined that S@SWCNTs can provide 74% higher volumetric hydrogen density compared to an undoped equivalent at 2 MPa and 77 K.

Graphical abstract: Hydrogen sorption on microporous carbon/sulfur nanocomposite systems

Supplementary files

Article information

Article type
Paper
Submitted
09 sen 2022
Accepted
31 yan 2023
First published
06 fev 2023
This article is Open Access
Creative Commons BY license

Energy Adv., 2023,2, 398-409

Hydrogen sorption on microporous carbon/sulfur nanocomposite systems

C. D. Brewster, L. R. Terry, H. V. Doan, S. Rochat and V. P. Ting, Energy Adv., 2023, 2, 398 DOI: 10.1039/D2YA00242F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements