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Mechanical, Thermal, and Electrical Energy Storage in a Single Working Body: Electrification and Thermal Effects upon Pressure-Induced Water Intrusion–Extrusion in Nanoporous Solids

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journal contribution
posted on 08.02.2017, 00:00 by Yaroslav Grosu, Michał Mierzwa, Valentine A. Eroshenko, Sebastian Pawlus, Mirosław Chorażewski, Jean-Marie Nedelec, Jean-Pierre E. Grolier
This paper presents the first experimental evidence of pronounced electrification effects upon reversible cycle of forced water intrusion–extrusion in nanoporous hydrophobic materials. Recorded generation of electricity combined with high-pressure calorimetric measurements improves the energy balance of {nanoporous solid + nonwetting liquid} systems by compensating mechanical and thermal energy hysteresis in the cycle. Revealed phenomena provide a novel way of “mechanical to electrical” and/or “thermal to electrical” energy transformation with unprecedented efficiency and additionally open a perspective to increase the efficiency of numerous energy applications based on such systems taking advantage of electricity generation during operational cycle.