A facile route based on chemical bath deposition (CBD) from urea containing bath has been developed to deposit the interlocked cubes of hausmannite Mn 3 O 4 electrode for electrochemical supercapacitor application. The as-prepared Mn 3 O 4 electrode showed ideal capacitive behavior during potential cycling within the range of −0.1 to +0.9V in 1M Na 2 SO 4 electrolyte. The X-ray diffraction (XRD), scanning electron micrograph (SEM) and Raman scattering (RS) and wettability studies during the supercapacitive stability showed that the interlocked cubes of crystalline Mn 3 O 4 are electrochemically oxidized to nanoflakes of layered birnessite MnO 2 due to potential cycling. Due to potential cycling the contact angle of Mn 3 O 4 thin film changed from hydrophilic to superhydrophilic nature. The effect of electrolyte concentration and scan rate on the specific capacitance of so formed MnO 2 film has been investigated. Impedance analysis shows that birnessite MnO 2 nanoflakes are good conducting than Mn 3 O 4 hence can be used over a wide range of applications. It exhibited highest specific capacitance of 223Fg −1 in 1M Na 2 SO 4 electrolyte at 5mVs −1 scan rate and 90% stability after 5000 cycles.