Nano-Pr2O3 Doped PVA + Na3C6H5O7 Polymer Electrolyte Films for Electrochemical Cell Applications. (2nd January 2018)

• Record Type: Journal Article
• Authors: Babu, J. Ramesh; Ravindhranath, K.; Kumar, K. Vijaya
• Other Names: Deng Yulin Academic Editor.
• Is Part Of: International journal of polymer science. Volume 2018(2018)
• Publication Date: 2018-01-02
• Subjects: Polymers -- Periodicals; Polymers; Periodicals; 547.7
• DOI: 10.1155/2018/7906208
• Languages: English
• ISSNs: 1687-9422

Abstract

Abstract : Varying concentrations of nano-Pr2 O3 doped in "PVA + Sodium Citrate (90 : 10)" polyelectrolyte films are synthesized using solution cast technique and the films are characterized adopting FTIR, XRD, SEM, and DSC methods. The film with 3.0% of nano-Pr2 O3 content is more homogenous and possesses more amorphous region that facilitate the deeper penetration of nanoparticles into the film causing more interactions between the functional groups of the polymeric film and nano-Pr2 O3 particles and thereby turning the film more friendlily to the proton conductivity. The conductivity is maximum of 7 × 10 −4 S/cm at room temperature for 3.0% nano-Pr2 O3 film and at that composition, the activation energy and crystallinity are low. With increase in temperature, the conductivity is increasing and it is attributed to the hopping of interchain and intrachain ion movements and furthermore decrease in microscopic viscosity of the films. The major charge carriers are ions and not electrons. These films are incorporated successfully as polyelectrolytes in electrochemical cells which are evaluated for their discharge characteristics. It is found that the discharge time is maximum of 140 hrs with open circuit voltage of 1.78 V for film containing 3% of nano-Pr2 O3 and this reflects its adoptability in the solid-state battery applications.