Open AccessElectrical and Optical characterization of Malonic acid doped Poly Vinyl Alcohol polymer electrolytes
Publication year - 2021
Publication title -
international journal for innovative engineering and management research
Language(s) - English
Resource type - Journals
ISSN - 2456-5083
DOI - 10.48047/ijiemr/v10/i09/28
Subject(s) - vinyl alcohol , electrolyte , dopant , malonic acid , conductivity , materials science , polymer , absorption (acoustics) , electrical resistivity and conductivity , doping , polymer chemistry , inorganic chemistry , chemistry , organic chemistry , electrode , composite material , optoelectronics , electrical engineering , engineering
Novel proton conducting solid polymer electrolyte membranes based on Poly vinyl alcohol(PVA) with Malonic Acid as dopant are prepared by solution cast technique with varyingdoping concentrations up to 40 wt.%. The electrical conductivity and optical absorption ofpure PVA and Malonic aciddoped PVA electrolytes are investigated. DC conductivitybehavior is studied in the range 303K to 373K. It is found that PVA: Malonic acid (70:30)electrolyte exhibits the maximum conductivity. The electrical conductivity initially increaseswith increasing dopant concentration and then showed a decrease beyond 30 wt.%concentration. The increase in conductivity is attributed to formation of charge transfercomplexes while the decrease for concentrations above 30 wt.% is due to segregation.Optical absorption studies are made in the wavelength range 200-600 nm and the values ofoptical band gap (direct and indirect) are estimated. The results obtained are presented anddiscussed.