Copper azide nanowires@rgo energetic composite with low electrostatic sensitivity

Abstract

A novel energetic composite with low electrostatic sensitivity was successfully synthesised in this work. Copper nanowires decorated reduced graphene oxide (CuNW@rGO) precursor was prepared through a facile one-pot hydrothermal approach. Then the precursor was deposited on silicon substrate by electrophoretic deposition, which greatly reduced the security risks of directly handling of powder sample. Copper azide nanowires(CANW)@rGO was in-situ fabricated by reaction of copper nanowire (CuNW ) @rGO with HN3 gas. The materias were characterized by SEM-EDS, TEM, XRD, DSC and Raman spectroscopy. The electrostatic sensitivity of CANW@rGO composite was investigated by electrostatic sensitivity tester JGY-50III. The discharge energy at 50%(E50%) of CANW@rGO composites with rGO contents of 15 and 25 wt% were 0.92mJ and 1.43mJ, respectively. The results indicate that the electrostatic sensitivity of the as-prepared CANW@rGO energetic composite was highly reduced with the addition of rGO.

In Situ Electrochemical Construction of CuN3@CuCl Hybrids for Controllable Energy Release and Self-Passivation Ability

“…This emphasizes the importance of efficiently regulating the energetic characteristics of EMs. Presently, copper-based azides (CA, CuN 3, and Cu­(N 3 ) 2 ) have gained significant attention for integration with MEMS due to their good initiation ability and environmental friendliness. − To overcome the undesirable electrostatic sensitivity, CA is supported in conductive carbon materials through physical mixing (carbon fiber, graphite, graphene, or graphene oxide) or via in situ synthesis (carbon nanotubes or porous carbon). − Despite these advancements, these methods are challenging in terms of complex syntheses, high costs, and safety risks during preparation. Furthermore, achieving efficient and secure MEMS-compatible EMs by tuning the properties of CA materials remains a significant challenge.…”