Study of the plasticizer effect on a (PEO+NaYF4) polymer electrolyte and its use in an electrochemical cell

• Published in: Solid state ionics Vol. 126; no. 1-2; pp. 55 - 63
• Main Authors: Jaipal Reddy, M., Sreekanth, T., Subba Rao, U.V.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.11.1999; Elsevier Science
• Subjects: Application fields; Applied sciences; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical cell; Electrochemical conversion: primary and secondary batteries, fuel cells; Exact sciences and technology; Ionic conductivity; Plasticizer effect; Polymer industry, paints, wood; Technology of polymers; Transport number; Electrochemical cell; Plasticizer effect; Transport number; Ionic conductivity; Electrical properties; Use; Temperature effect; Polymer solid electrolyte; Experimental study; Ethylene oxide polymer; Sodium Compounds; Discharge current; Plasticizer; N,N-Dimethylformamide; Concentration effect; Current time characteristic; Electrical characteristic
• ISSN: 0167-2738; 1872-7689
• DOI: 10.1016/S0167-2738(99)00225-8

Poly(ethylene oxide) (PEO)-based solid polymer electrolyte films with NaYF4 and NaYF4+plasticizer (dimethyl formamide) have been prepared by the solution-cast technique. Various experimental techniques have been used, such as electrical conductivity (composition dependence, temperature dependence in the temperature range 303–400 K) and transport number measurements, to characterise these polymer electrolyte films. The conductivity–temperature plots showed an increase in conductivity with increasing temperature. The increase in conductivity is about 10 times larger in the plasticizer-added (PEO+NaYF4) polymer electrolyte system compared with the pure (PEO+NaYF4) polymer electrolyte system. Electrochemical cells of configuration Na/(PEO+NaYF4+plasticizer)/(I2+C+electrolyte) have been fabricated. The discharge characteristics of the cells were studied for a constant load of 100 kΩ. The open circuit voltage (OCV), short circuit current (SCC), discharge time for the plateau region, etc., were evaluated and compared with data from our earlier reported (PEO+NaYF4) electrochemical cells.