To develop novel active metal complex fuels， three new types of active metal complexes were synthesized using cyanoborohydride （CBH^-） as the anion， transition metal Cu（Ⅱ） as the central ion， and 1-methylimidazole （1-MIM）， 2-methylimidazole （2-MIM） and 4-methylimidazole （4-MIM） as ligands. Their structures were accurately characterized via infrared spectroscopy and single-crystal X-ray diffraction， and the corresponding structural formulas are ［Cu（1-MIM）₄］（CBH）₂， ［Cu（2-MIM）₄］（CBH）₂ and ［Cu（4-MIM）₄］（CBH）₂， respectively. The thermal decomposition properties， energy density and mechanical sensitivity of the three novel metal complexes were tested. Their theoretical specific impulse when combined with 90 % H₂O₂ oxidizer was calculated based on NASA-CEA， and the hypergolic ignition performance of the novel active metal complex fuels with 90% H₂O₂ was investigated via high-speed photography. The results show that all three metal complexes exhibit high energy density （26.5-27.3 kJ·g^-1） and low sensitivity， with friction sensitivity >360 N and impact sensitivity >40 J. All three complexes can undergo hypergolic reaction upon contact with 90 % H₂O₂ at room temperature， and the ignition activity follows the order ［Cu（2-MIM）₄］（CBH）₂ < ［Cu（4-MIM）₄］（CBH）₂ < ［Cu（1-MIM）₄］（CBH）₂. Among them， ［Cu（1-MIM）₄］（CBH）₂ has the shortest ignition delay time of 43 ms， indicating that different methyl substitution positions on the ligand significantly affect the hypergolic ignition performance of the complexes with 90% H₂O₂.