Study on the combustion performance and micro-reaction mechanism of aluminum nanoparticles modified by fluorinated graphene with different contents

Utilizing fluorinated graphene (FG) to modify aluminum nanoparticles (Al NPs) can improve their reaction performance, but the optimal ratio and the interaction mechanism are not yet clear. In this study, experimental research was combined with ReaxFF molecular dynamics simulations to explore the effect of FG content on the combustion performance of Al/FG composites, and to reveal the micro-reaction mechanism. The results indicate that when FG content is low, its modification effect on the Al NPs is limited. As FG content increases, the reaction performance and combustion characteristics are significantly improved. However, excessive FG can reduce the reaction efficiency of FG and lead to the serious decrease in system energy density. The optimal FG content is about 30 wt. %. This study fills the gap in FG-modified Al NPs and provides guidance for the practical application of modified Al particles.