20.500.12556/RUL-184299 Activating aluminium for oxidation and hydrogen release overcoming the passivation barrier with superheated steam Aluminium has considerable potential for use in seasonal energy storage, as it is energy dense and stable and can be recycled sustainably. However, a dense alumina barrier prevents energy extraction. In this work, aluminium is activated, and energy is extracted by oxidation using pressurized superheated steam. The activation of aluminium by penetrating the dense passivation layer requires the right feed material and reaction conditions. The onset mechanism is studied for low-yield reactions up to 2 %. In combination with pressures above 10 barG, microcracks form at temperatures above 500 °C. The diffusion of superheated steam through microcracks into the core of the aluminium results in oxidation past the passivation barrier and the evolution of H$_2$. This concept is further proven by the detection of Al$_2$O$_3$. This alternative reaction route in a dry oxidizing environment broadens the application range of aluminium as a metal fuel for long-term chemical energy storage. aluminium oxidation superheated steam hydrogen seasonal energy storage kemijska tehnologija oksidacija aluminij vodik shranjevanje energije true false true Angleški jezik Slovenski jezik Članek v reviji 2026-07-03 09:38:54 2026-07-03 09:38:55 2026-07-04 04:21:58 0000-00-00 00:00:00 2026 0 0 16 str. art. 153183 Vol. 205 30 Jan. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66 1879-3487 10.1016/j.ijhydene.2025.153183 282446339 1-s2.0-S0360319925061865-main.pdf 1-s2.0-S0360319925061865-main.pdf 1 A200753D2308D363E3A8BC47BCB1E385 af8deeb6336079b8a76dfdd1048a16c114c4a629faa8f361f377da272b5acb3c 49c31e9b-76b2-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=236944 https://www.sciencedirect.com/science/article/pii/S0360319925061865 1 24ed6c6d-76b2-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=236943 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0