In response to the urgent demand for high-performance energetic material and in-situ integration method in microelectromechanical systems （MEMS） pyrotechnics， a safe and controllable electrochemical synthesis strategy was proposed for the in-situ growth of Cu₃Cl（N₄C-NO₂）₂ energetic metal complexes on a copper substrate surface. The influences of chloride ion concentration on the purity， crystal structure， and microstructure of the product were systematically investigated， and the phase morphology， energetic properties， and sensitivity of the energetic metal complex were comprehensively characterized. Results indicate that the chloride ion concentration significantly affects the phase composition of the energetic metal complexes. When the Cl^- concentration is 0.6 mol·L^-1， the high-purity and high-crystallinity Cu₃Cl（N₄C-NO₂）₂-0.6 energetic complex crystals are obtained. DSC analysis reveals a thermal decomposition peak at 301.7 ℃， with an exothermic heat of 1877.8 J·g^-1 and an apparent activation energy of approximately 157-159 kJ·mol^-1， demonstrating excellent thermal stability and energy release characteristics. Laser ignition experiments show that it possesses good detonation performance. Electrostatic sensitivity tests indicate that the in situ integrated energetic complex crystal films through electrochemical methods exhibit excellent electrostatic safety.