Advancement in Molecular Hydrogen Storage Systems

Hydrogen storage in molecular compounds.

At low temperature (T) and high pressure (P), gas molecules can be held in ice cages to form crystalline molecular compounds that may have application for energy storage. We synthesized a hydrogen clathrate hydrate, H(2)(H(2)O)(2), that holds 50 g/liter hydrogen by volume or 5.3 wt %. The clathrate, synthesized at 200-300 MPa and 240-249 K, can be preserved to ambient P at 77 K. The stored hydr...

Development of Automotive Liquid Hydrogen Storage Systems

Liquid hydrogen (LH2) takes up less storage volume than gas but requires cryogenic vessels. State-of-the-art applications for passenger vehicles consist of double-wall cylindrical tanks that hold a hydrogen storage mass of up to 10 kg. The preferred shell material of the tanks is stainless steel, since it is very resistant against hydrogen brittleness and shows negligible hydrogen permeation. T...

Hydrogen Storage in Heterojunction Carbon Nanotubes: Molecular Dynamics Study

Hydrogen, a renewable and environmentally friendly energy resource, has drawn much attention in the past decades. Carbon nanotubes (CNTs) have been studied as potential candidates for hydrogen storage [1-3]. On the other hand, simulations have predicted low uptake of hydrogen on idealized SWNTs [4-7]. Y.C Ma et al [8] has explored a valid method to simulate the hydrogen storage in carbon nanotu...

High capacity molecular hydrogen storage in novel crystalline solids

A number of hydrogen-rich van der Waals compounds have recently been discovered and hold promise for improving hydrogen storage technology, but the structure and nature of the intermolecular interactions in many of these materials is unknown. We have determined the previously unknown structure of CH4(H2)4 using a novel combined theoretical and experimental approach. This material contains the l...

Application of Ionic Liquids in Hydrogen Storage Systems