Rapid Discharge of Solid-State Hydrogen Storage Using Porous Silicon and Metal Foam
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Rapid Discharge of Solid-State Hydrogen Storage Using Porous Silicon and Metal Foam

Authors: Loralee P. Potter, Peter J. Schubert


Solid-state hydrogen storage using catalytically-modified 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 low-density 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. Curve-fitting 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 techno-economic analysis of the silicon and metal foam provides comparison with other methods of storing hydrogen for mobile and portable applications. 

Keywords: conduction, convection, kinetics, fuel cell

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[1] Schubert, P., Wilks, A., “Thermodynamic analysis of a novel hydrogen storage material: nanoporous silicon,” Materials Innovations in an Emerging Hydrogen Economy, G.G. Wicks, J. Simon, Ceramics Transactions v. 202, Eds., J.Wiley, 2009.
[2] Neiner, D., Chiu, H. W., Kauzlarich, S.M., “Low-temperature solution route to macroscopic amounts of hydrogen terminated silicon nanoparticles,” J Am Chem Soc, 30 Aug 2006,128(34):11016-7. doi: 10.1021/ja064177q.
[3] Boaks, M., and Schubert, P., “Kinetics of hydrogen storage on catalytically-modified porous silicon,” J. Cat., 371, March 2019, p. 81-87.
[4] Chen, A., Adams, D., “The role of palladium in a hydrogen economy,” Materials Today, v. 15, no. 6, June 2011, pp 282-289.
[5] Singh, A., Ribas, M., Yakobson, B., “H-Spillover through the Catalyst Saturation: An Ab Initio Thermodynamics Study, “ ACS Nano, v. 3, no. 7, 1657-1662, 2009.
[6] Innovation Core SEI website https://global-sei.com/usa/ics/ (accessed 17Aug 2021).
[7] Schubert, P., Urbanek, A, “Hydrogen Recharge Dynamics and Vessel Design for Porous Silicon Storage Media,” in Ch. 6 of Nanotechnology 2014: Electronics, Manufacturing, Environment, Energy & Water, vol. 3, CRC Press, ISBN 9781482258301, pp. 418-422, 2014.
[8] Ohring, Milton. "Engineering Materials Science." New York: Academic Press, 1995.
[9] Schubert, P. J., “Solid-State Hydrogen Storage Media and Catalytic Hydrogen Recharging Thereof, US Patent 8,518,856, 2013.
[10] Schubert, P., Babcock, J., “Advances in Synthesis of Porous Silicon for Hydrogen Storage,” Proc. Of World Hydrogen Technology Conference, Shanghai, 25-28 Sept. 2013.