Ionic Conductivity And Electrochemical Cell Studies Of New Mg2+ ion Conducting PVA/PEG Based Polymer Blend Electrolytes 

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

DOI: 10.5185/amlett.2012.6375

Publication Date (Web): Sep 16, 2012

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E-mail: reddyphysics06@gmail.com

Abstract

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.

Keywords

Polymer electrolytes, ionic conductivity, transport number, discharge characteristics.