“…Al-based nanoenergetic composites are a new type of energetic materials mainly composed of Al nanoparticles (nAl) and oxidants (such as oxides and fluorides) − and have attracted much attention in the field of energetic materials. Due to the close contact of the reaction components at the nanoscale, they often exhibit high energy density, a fast and tunable reaction rate, short ignition delay time, and excellent combustion performance. − At present, they have wide applications in the fields of ignition and propulsion. , However, since the atomic activity on the surface of nAl is extremely high and unstable, their surface can be easily oxidized and form an Al 2 O 3 passivation layer. − As a result, the nAl with reduced reactivity first break open the Al 2 O 3 shell during the redox reaction, and then, the inside active nAl melted can overflow and undergo an exothermic reaction with the oxidant. ,, Therefore, the Al 2 O 3 nanolayer on the nAl surface has a direct influence on the energy performance of Al-based nanoenergetic composites, which may be the key to further optimize and regulate its reaction performance in addition to controlling the equivalence ratio of the Al fuel and oxidant.…”