Magnesium ion-conducting solid polymer electrolyte based on cellulose acetate with magnesium nitrate (Mg(NO3)(2)center dot 6H(2)O) for electrochemical studies

摘要

In this paper, the solution casting technique was used to develop the magnesium-conducting solid polymer electrolyte (PE) using cellulose acetate (CA) with the magnesium nitrate (Mg(NO3)(2)center dot 6H(2)O) salt. The crystalline/amorphous nature of CA with different concentrations of Mg(NO3)(2)center dot 6H(2)O polymer electrolytes was studied by X-ray diffraction (XRD) analysis. The highest ionic conductivity of 9.19 x 10(-4) S/cm was found for 60 wt.%CA/40 wt.% Mg(NO3)(2)center dot 6H(2)O PE by Ac impedance spectroscopy at room temperature. The polymer membranes are subjected to FTIR analysis. The glass transition temperatures (T-g) of the PEs were determined using differential scanning calorimeter (DSC). Then, the transference number of Mg2+ ion for 60 wt.%CA/40 wt.% Mg(NO3)(2)center dot 6H(2)O PE was measured as 0.35 using Evan's method. The electrochemical stability of 3.65 V was observed for the highest ionic conducting PE by linear sweep voltammetry. The cyclic voltammetry (CV) study was done for highest ionic conducting polymer electrolyte. Finally, the primary magnesium battery was constructed with the highest ionic conducting PE, and its performance was studied.