Abstract
Solid polymer proton conductors comprising of poly(vinyl alcohol), ammonium acetate and water have been prepared by solution cast method for different NH 4 +/OH − ratios. The XRD spectra for the electrolyte indicate that the amorphous nature of PVA increases with the concentration of ammonium acetate. The DSC curves show the low glass transition temperature for the ratio (NH 4 +/OH −) = 0.25 which relates to higher conductivity of the sample. The ionic conductivity at room temperature depends strongly on NH 4 +/OH − ratios. The variation of electrical conductivity with temperature showed two regions of activation above and below glass transition temperature. The optical absorption studies show the similar trend for pure PVA and salt-doped PVA with different absorption intensity. The direct and indirect band gap energy is observed to be constant for pure PVA and salt-doped PVA samples and found to be 5.4 eV and 4.8 eV, respectively. The dc polarization measurement shows that the conductivity is mainly due to ions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
