Conductivity study of polyethylene oxide (PEO) complexed with sodium bicarbonate
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Ion conducting thin film polymer electrolytes based on polyethylene oxide (PEO) complexed with NaHCO3 salt has been prepared using solution-cast technique. The complexation of NaHCO3 salt with PEO is confirmed by XRD and IR studies. DC conductivity in the temperature range 303–368 K has been evaluated. The conductivity is found to increase in the PEO complex with the NaHCO3 salt and also with an increase in temperature. Using this polymer electrolyte, an electrochemical cell with the configuration Na/(PEO + NaHCO3)/(I2 + C + electrolyte) has been fabricated and its discharge characteristics studied. Open Circuit Voltage (OCV) and Short Circuit Current (SCC) are found to be 2.69 V and 1.28 mA, respectively. Other parameters associated with the cell are evaluated and presented in this paper.
KeywordsNaHCO3 Polymer Electrolyte Open Circuit Voltage Discharge Characteristic Solid Polymer Electrolyte
The authors thank the Head, Department of Physics, Osmania University Hyderabad, for his encouragement. One of the authors KVK thank Dr. B.N. Reddy, Chairman, CBIT, D. Kamalakar Reddy, Secretary, CBIT & Prof. I. Ramchandra Reddy, Principal, CBIT, for their help and cooperation. One of the authors MJR thank CSIR, New Delhi for the award of SRA, under Scientist’s Pool scheme.
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