Energy-releasing properties of metal hydrides (MgH 2, TiH 2 and ZrH 2 ) with molecular perovskite energetic material DAP-4 as a novel oxidant

Metal hydride has been used as a potential energetic material due to its high hydrogen storage density, high reactivity, high mass calorific value and large gas production. But it was still a great challenge towards optimizing and enhancing the energy-releasing properties of metal hydride. In this work, a novel molecular perovskite energetic material (H 2 dabco)[NH 4 (ClO 4 ) 3 ] (DAP-4) was introduced as a high energy oxidant to fabricate metal hydride (MH 2 , M = Mg, Ti, and Zr) based energetic composites. The thermal decomposition, ignition and combustion characteristics of MH 2 -based energetic composites were studied. The results showed that molecular perovskite energetic material DAP-4 was beneficial as oxidant in MH 2 -based high-energy solid composites, which were originated from its high energy properties and strong oxidation capacity. The ignition and combustion reaction mechanisms of MH 2 with DAP-4 as oxidant were provided. This work offered an effective way to realize energy-releasing performance of MH 2 by molecular perovskite energetic materials introduced for their potential application. (c) 2022 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

Automated summary

In this study, a novel molecular perovskite energetic material (DAP-4) was introduced as an oxidant to fabricate high-energy composites based on metal hydrides (MH2, M = Mg, Ti, and Zr). The thermal decomposition, ignition, and combustion characteristics of MH2-based composites were studied, and it was found that DAP-4 improved the ignition and combustion performance due to its high energy properties and strong oxidation capacity. This work provides an effective approach to enhance the energy-releasing performance of MH2 through the use of molecular perovskite energetic materials.