Solid-state batteries play a vital role in the development of science
and technology, from portable electronics on one extreme to electric vehicles to backup power sources in aircraft. With solid state batteries, problems encountered in conventional liquid electrolyte battery systems such as spillage, difficulty in handling
liquids during manufacturing, corrosiveness of liquid electrolyte to the container and sealants [6], low power to weight ratio and limited shelf life [7] can be overcome. Particularly Li+ ion batteries based PCPSEs have recently attracted huge attention for vehicular application due to its small ionic radii and hence could be intercalated into the layers of the layered materials in electrode. However, this type of batteries has high cost, difficult to handle lithium electrodes and have inherent safety concern. Hence, the proton (H+) based rechargeable proton battery can be considered as cost-effective alternatives and appear as a good alternative for lower energy density battery applications in spite of a smaller electrochemical stability window compared with Li+ batteries