Conductivity studies of (PEO +KHCO3) solid electrolyte system and its application as an electrochemical cell

Solid polymer electrolyte system,polyethylene oxide (peo) complexed with potassium bicarbonate (khco3) salt was prepared by solution-cast technique. several experimental techniques such as ir,differential scanning calorimeter (dsc),and composition dependence conductivity,temperature dependence conductivity in the temperature range of 308 - 368k and transport number measurements were employed to characterize this polymer electrolyte system. the conductivity of the (peo+khco3) electrolyte was found to be about 3 times larger than that of pure peo at room temperature. the transference data indicated that the charge transport in these polymer electrolyte systems is predominantly due to k+ ions. using this polymer electrolyte an electrochemical cell with configuration k+/(peo+khco3)/(i2+celectrolyte) was fabricated and its discharge characteristics are studied. a number of other cell parameters associated with the cell were evaluated and are reported in this paper. © school of engineering,taylor's university college.