Cornstarch/polyvinylpyrrolidone based proton conducting biocompatible polymer blend electrolyte for long life battery

Biocompatible solid polymer blend electrolytes have been formed by cornstarch and polyvinylpyrrolidone (PVP) with the incorporation of ammonium nitrate (NH4NO3) via solution casting technique. XRD and FTIR analysis were used to study the complexation and structural properties of solid polymer electrolytes. From the electrical impedance study, it is confirmed that 60 wt.% NH4NO3 system attains the higher conductivity value of 6.81 x 10(-5) Scm(-1) at 303 K and 1.85 x 10(-4) Scm(-1) at 358 K. Wagner's dc polarization technique has confirmed the higher cation diffusion coefficient (D+) and ionic mobility (mu(+)) than anion which proves that NH4NO3-based polymer blend electrolyte is a proton conductor. In order to improve the conductivity, 10 wt.% ethylene glycol (EG) is added to the higher conducting polymer blend electrolyte, and the conductivity of 2.08 x 10(-4) Scm(-1) is obtained at 303 K. Electrochemical cells have fabricated by using the higher conducting polymer blend electrolyte and plasticizer added electrolyte, and the open circuit voltage of 1.23 V and 1.36 V has obtained, respectively.