Design and fabrication of Nanostructured metal hydride based hydrogen storage material for portable, light weight applications
Abstract
Nanostructured metal hydrides are an important class of materials with significant potential for energy storage applications. This field is now growing steadily due to the ability to tune the material properties. Among the metal hydrides, MgH2 has attracted worldwide attention as solid state hydrogen storage material. Nanocrystalline MgH2 gives hope in terms of displaying improved hydrogen sorption kinetics. In our earlier research, we have found that single walled carbon nanotube (SWCNT) functionalized with magnesiumhydride (MgH2) can be used as practical hydrogen storage medium. Now we propose to use graphene or its derivatives in the place of CNT to get a improved hydrogen storage system. For improving the functionalization and changing the interfacial behaviour through covalent modification, graphene will be doped with suitable elements such as boron (B) and nitrogen (N) avoiding any possible alloy formation. Apart from doping effect, the effect of structural defect such asvacancy will also be investigated. This way of functionalization may also lead to ordered functionalization and enhance the quantum properties of graphene. The graphene-MgH2 hybrid material will be hydrogenated and experimented to ascertain its hydrogenation and dehydrogenation properties. Finally the suitability of the hydrogen storage system for fuel cells in portable and light-weight appliances will be tested by connecting it to a Fuel cell. The entire material system will be computationally designed and tested for its structural stability. After this computational confirmational study, the experimental fabrication, characterization and testing will be carried out.Relevance to DoD: The proposed project addresses the current problem in the areas of Hydrogen Energy and Environment (no CO2 emission). This is very much relevant toONR. Also this project involves the development of new advanced hydrogen storage material for portable, light-weight applications, which is also relevant to ONR. Desired outcomes of this research : The findings of the project will be presented in conferences and published in international Journals. A full length report will be submitted to ONRG. Completion of the project will result in a well-defined design and preparation method for new advanced graphene functionalized with metal hydride MgH2. It will emerge as apromising hybrid hydrogen storage material capable of supplying H2 for the fuel cell.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 11, 2023
- Source ID
- N629092312081
Entities
People
- Iyakutti Kombiah
Organizations
- Office of Naval Research
- United States Navy