IONIC-CONDUCTIVITY OF PBI2-PBO GLASS

A glassy solid electrolyte of the (1-x)PbI2-xPbO system was prepared u sing two kinds of quenching methods. In the case of the iron pressing method, 0.68PbI(2)-0.32PbO (x=0.32) glass was obtained when PbI2 melt reacts with oxygen in air. In the case of the quenching method using i ce water, the glassy sample was not obtained when x<0.35. Conductivity was enhanced and crystallization temperature was decreased with decre asing PbO content x. A maximum conductivity of 6.2 x 10(-7) S . cm(-1) at 373 K was obtained for x=0.32 glass plate prepared by the iron pre ssing method. This value is almost equal to the maximum conductivity o f anion conducting glasses reported, I- ions would be the sole carrier ions, based on an estimation of the electromotive force of the I-2 co ncentration cell.