Electrochemical-confined growth of Cu(BTA) nano energetic arrays with excellent energy-release and ignition properties

Exploiting a facile and efficient, route for energetic arrays is of critical importance for boosting their energy output and broadening their application prospects. In this work, Cu(BTA) energetic arrays were successfully fabricated on copper substrates via an electrochemical confinement growth method, based on the coordination reaction between Cu(OH) 2 arrays and energetic ligands. The chemical composition, microscopic morphology, thermal behaviors and ignition characteristics of the samples were systematically characterized by scanning electron microscopy, infrared spectroscopy, differential scanning calorimetry and pulsed laser ignition tests. The results demonstrate that the Cu(BTA) energetic arrays synthesized via coordination reaction between Cu(OH) 2 arrays and H 2 bta ligands consist of nanorods with an average length of 4310 nm and an average width of 330 nm, and their morphological features on copper substrates can be finely tuned by adjusting reaction parameters, including reaction time, solution concentration, and applied voltage. Thermal analysis reveals that the arrays presents a onset thermal decomposition temperature of 226.39 °C with a heat release of 737.05 J·g -1 , demonstrating favorable thermal energetic performance. Furthermore, ignition characterization confirms that the arrays achieves a flame height of 16.51 mm and a combustion duration of 700 μs, indicating excellent ignition reactivity. In conclusion,this work offers experimental support for the fabrication of energetic arrays and their practical applications in igniters and other related fields.