UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Tuneable graphite intercalates for hydrogen storage

Lovell, A; (2007) Tuneable graphite intercalates for hydrogen storage. Doctoral thesis , UNSPECIFIED.

Full text not available from this repository.


The development of hydrogen as an energy transfer mechanism is of great importance to alleviate environmental damage and economic destabilisation caused by over-reliance on oil, as long as the hydrogen can be generated renewably. To be suitable for road transport applications, safe and compact hydrogen storage systems need to be developed, the primary technological motivation for this PhD project which investigates hydrogen absorbed into graphite intercalation compounds (GICs), to gain a fundamental physical understanding of the sorption processes to improve such materials' capacity for hydrogen storage. Literature searching has led to a principal investigation, primarily using neutron scattering and thermogravimetry, of potassium and calcium-GICs with hydrogen. Inelastic neutron scattering on hydrogenated KC24 has shown hydrogen sorption in this system to be quantitatively different from its analogues RbC24 and CsC24. A consistent model of the H2 sites and dynamics has been proposed. Time-resolved structural data on the hydriding phase transition in KC8Hx have been obtained. A calcium-ammonia intercalate has shown most promise for hydrogen storage, with uptake of 3.2 wt.% H2 at 77 K and 2 bar, a signifcant amount of the 6 wt.% target set by the US DoE. It is concluded that available internal volume and donor charge in GICs are critical parameters for optimising hydrogen uptake.

Type: Thesis (Doctoral)
Title: Tuneable graphite intercalates for hydrogen storage
Event: UCL
Publisher version: http://eprints.ucl.ac.uk/13806/
Additional information: Also available at STFC ePubs service.
Keywords: Intercalation, Graphite intercalation compounds, Hydrogen storage, Neutron scattering, Thermogravimetry, CASTEP, Density functional theory, Potassium
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/102696
Downloads since deposit
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item