<p>Flexible supercapacitors are critical for the forthcoming wearable electronics, because it offers high power density, flexibility, long cycle life and portability. Among the various active electrode materials of supercapacitor, manganese ferrite (MnFe₂O₄) is a promising candidate owing to its multi-electron redox chemistry, earth-abundance and low toxicity. Whereas, many commonly used synthesis methods for this material are affected by the high temperature, high pressure and sophisticated operations, making it is difficult to be fabricated in short time and large-scale. This study focuses on the rapid room-temperature cathodic deposition route, electrochemical deposition, that synthesis MnFe₂O₄ materials uniformly on commercial carbon cloth (CC) without any binder. After optimizing the electrodeposition time, the binder-free MnFe₂O₄@CC flexible electrode delivers areal specific capacitance of 357.77 mF cm⁻² at 1 mA cm⁻². Combining the MnFe₂O₄@CC, MnO₂@CC flexible electrodes and PVA-Na₂SO₄ gel electrolyte, the assembled asymmetric supercapacitor device exhibits capacitance of 71.3 mF cm⁻² at 2 mA cm⁻² in the relatively large potential windows of 0–2.2 V. Furthermore, the supercapacitor retains 86.87% of initial capacitance after 5000 charging and discharging&#xa0;cycles at 2 mA cm⁻², and exhibiting great electrochemical stability after bending cycles, showing significant application potential for the flexible energy storage systems and wearable electronics.</p>