With the rapid development of flexible supercapacitors (SCs), there is increasing demand for high-performance solid electrolyte to replace the conventional liquid electrolyte. Hydrogel electrolyte is one of the promising candidates, which possesses solid state but contains a large amount of water within its highly porous structure. However, most hydrogels have inadequate mechanical properties and hardly remain sticky after cross-linked. This soft nature of hydrogel damages the electrolyte and separating of two electrodes when the SC bends. Thus, attention has been given to develop a flexible and sticky hydrogel electrolyte for the preparation of novel SC. Herein, we are reporting about hydrogel electrolyte by creating a double network with bacterial cellulose (BC) and poly acrylic acid (PAA), which is transparent, comparatively strong-flexible and sticky. It consists of conductive electrolyte (1M Na2SO4) which supports to achieve high ionic conductivity within the hydrogel. The resultant BC/PAA hydrogel electrolyte was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), ionic conductivity and mechanical test in compression. The properties of BC/PAA hydrogel electrolyte will be discussed during presentation.