Loralee P. Potter and Peter J. Schubert
Rapid Discharge of SolidState Hydrogen Storage Using Porous Silicon and Metal Foam
6 - 10
2022
16
1
International Journal of Energy and Power Engineering
https://publications.waset.org/pdf/10012371
https://publications.waset.org/vol/181
World Academy of Science, Engineering and Technology
Solidstate hydrogen storage using catalyticallymodified porous silicon can be rapidly charged at moderate pressures (8 bar) without exothermic runaway. Discharge requires temperatures of approximately 110oC, so for larger storage vessels a means is required for thermal energy to penetrate bulk storage media. This can be realized with lowdensity metal foams, such as Celmet™. This study explores several material and dimensional choices of the metal foam to produce rapid heating of bulk silicon particulates. Experiments run under vacuum and in a pressurized hydrogen environment bracket conditions of empty and full hydrogen storage vessels, respectively. Curvefitting of the heating profiles at various distances from an external heat source is used to derive both a time delay and a characteristic time constant. System performance metrics of a hydrogen storage subsystem are derived from the experimental results. A technoeconomic analysis of the silicon and metal foam provides comparison with other methods of storing hydrogen for mobile and portable applications.
Open Science Index 181, 2022