Polymer electrolytes; ionic conductivity; transport number; discharge characteristics.
1Department of Physics, K L University, Guntur, Andhra Pradesh 522502, India
2Department of Physics, Dr. H S Gour University (A Central University), Sagar 470003, M.P., India
Adv. Mater. Lett., 2012, Current Issue, 3 (5), pp 406-409
Publication Date (Web): Sep 16, 2012
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Solid Polymer blend electrolytes based on Polyvinyl alcohol (PVA) and Polyethylene glycol (PEG) complex with Mg(CH3COO)2 at different weight percent ratios were prepared using solution cast technique. Conductivity in the temperature range 303-373 K and transference number measurements have been employed to investigate the charge transport in this solid polymer electrolyte system. The highest conductivity is found to be 3.23 x 10-5 S/cm at 373K for sample with 30 weight percent of Mg(CH3COO)2 in PVA/PEG blend matrix. Transport number data shows that the charge transport in this polymer electrolyte system is predominantly due to ions. Using this electrolyte, an electrochemical cell with configuration Mg /(PVA+PEG+Mg(CH3COO)2)/ (I2+C+electrolyte) was fabricated and its discharge characteristics profile has been studied.
Polymer electrolytes, ionic conductivity, transport number, discharge characteristics.