<p>Transition metal oxides exhibit high pseudocapacitance potential due to their multivalent reversible redox reactions, yet their low intrinsic conductivity and structural instability limit rate performance and cycle life. This study employs a hydrothermal-calcination strategy to fabricate a ZnCo₂O₄/V₂O₅ heterogeneous nanosheet composite electrode, which synergistically enhances electrochemical energy storage performance through interfacial coupling and pore structure modulation. Structural characterization reveals a wrinkled stacked layered nanosheet architecture with high specific surface area and mesoporous channels, facilitating electrolyte infiltration and ion diffusion. Electrochemical tests demonstrate that the ZnCo₂O₄/V₂O₅ composite electrode achieves a high specific capacitance of 1402 F·g⁻¹at 1 A·g⁻¹, maintaining excellent rate performance under high current densities. Kinetic analysis indicates that the energy storage process is predominantly a diffusion-controlled Faradaic reaction, accompanied by significant pseudocapacitance contribution. Further development of an asymmetric supercapacitor using ZnCo₂O₄/V₂O₅ as the cathode and functionalized carbon nanotubes as the anode achieves stable operation within the 0–1.6 V voltage window and exhibits outstanding capacity retention in long-cycle tests. The results provide a new idea for the interface engineering and structural design of transition metal oxide-based pseudocapacitive materials.</p>