Exfoliated Magnesium Diboride (MgB) Nanosheets as Solid Fuels.

Magnesium diboride (MgB) has been explored as an alternative fuel to boron (B) due to its high energy density and the additive effect of magnesium (Mg) to promote B combustion. However, the primary oxidation of MgB does not occur unless it decomposes at a high temperature (830 °C), which makes ignition difficult and the reaction slow. Recently, two-dimensional (2D) exfoliated MgB nanosheets have attracted increasing attention due to their unique properties and potential applications in various fields. In this study, we investigate the potential of 2D exfoliated MgB nanosheets as solid fuels for overcoming the challenges of MgB combustion. We analyzed their oxidation behavior and energetic performance through material characterization and combustion tests under slow- and fast-heating conditions and compared their performance with those of bulk MgB, B nanoparticles, and a B/Mg nanoparticle mixture. This study highlights the potential of MgB nanosheets as promising solid fuels with superior energetic properties.