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The layered structure of layered double hydroxides (LDH) is essential for its usage as an electrode material, yet the absence of efficient charge exchange across layered structures severely limits LDH’s employment in supercapacitors. In this work, NiCoMn LDH (abbreviated as LDH) and its composite with Ti₃SiC₂ MAXenes in 3 %, 6 % and 12 % by weight (abbreviated as LDH/M₃, LDH/M₆ and LDH/M₁₂, respectively) were synthesized using the probe sonication method. The LDH/M₆ electrode had a higher maximum specific capacitance (566.6 F/g) than the LDH (480.83 F/g), LDH/M₃ (508 F/g), and LDH/M₁₂ (489.1 F/g) electrodes at a current density of 0.5 A/g, which is about 16 %, 11 %, and 14 % higher than the aforementioned electrodes, respectively, demonstrating the effectiveness of using Ti₃SiC₂ MAXenes nanosheets. At 0.5 A/g, the capacitance of the asymmetric supercapacitor’s ideal LDH/M₆ electrode …