Highly Energy Release of Aluminum@Ammonium Perchlorate Composites Incorporated with Graphene Oxide‐based Energetic Coordination Polymer

Abstract

Abstract Achieving high energy release of aluminum (Al) and ammonium perchlorate (AP) is of significant importance in the realm of energy materials. In this work, integrated Al@AP/GO‐CHZ‐M (M = Co 2+ or Ni 2+ ) composites are successfully synthesized through an integrated design and precise catalysis approach. The integrated Al@AP/Co composites exhibit fast decomposition, with a 76.6 °C reduction in decomposition temperature and a 66.0% increase in heat release compared to Al+AP mixture counterpart. From a kinetic perspective, the decomposition activation energy for Al@AP/Co is largely decreased by 215.5 kJ mol −1 (−67.4%) and its kinetics shifted to an autocatalytic model. Transition metals in GO‐CHZ‐M facilitate the proton transfer during the decomposition of AP, significantly increasing the yield of low‐valence nitrogen oxides. The ignition of the Al@AP/M composites is enhanced, with a 37.2 ms (−40.2%) reduction in ignition delay and a 6.6‐fold increase in radiation intensity over Al+AP. The change from deflagration for the physical mixture to detonation for integrated Al@AP/M composites further suggests high energy release. Furthermore, the mechanism of the integrated design and precise catalysis on the energy release enhancement of Al@AP composites is elucidated. This approach holds broad application prospects in the fields of solid propellants, aluminized explosives, micro‐thrusters, and pyrotechnics systems.