TY - JOUR
T1 - Ionic conductivity enhancement of PVA
T2 - carboxymethyl cellulose poly-blend electrolyte films through the doping of NaI salt
AU - Cyriac, Vipin
AU - Ismayil,
AU - Noor, I. M.
AU - Mishra, Kuldeep
AU - Chavan, Chetan
AU - Bhajantri, Rajashekhar F.
AU - Masti, Saraswati P.
N1 - Funding Information:
Vipin Cyriac acknowledges the Directorate of Minorities, Bengaluru, Government of Karnataka, India for providing financial assistance in the form of Directorate of Minorities Fellowship for Minority Students, sanction order: DOM/Fellowship/CR-10/2019-20 dated 29-06-2020. Sincere gratitude to Dr. Sudhakar Y.N of the Department of Chemistry, Manipal Institute of Technology, Manipal, for his valuable comments during this study. The authors thank Z.E. Rojudi of the Physics Department, Faculty of Science, Universiti Putra Malaysia, for carrying out high-temperature dielectric measurements.
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/4
Y1 - 2022/4
N2 - In this paper, we report the effect of doping sodium iodide (NaI) salt into a polymer blend matrix of sodium carboxymethyl cellulose (NaCMC) and poly(vinyl alcohol) (PVA). Solution casting approach was used to prepare solid polymer electrolyte (SPE) films. The films were characterized by Fourier-transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), electrical impedance spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). XRD showed that NaI incorporation decreased the crystallinity of NaCMC/PVA-based SPE. FTIR technique confirmed the complexation of salt with polymer matrix due to the formation of the coordination bond between Na+ and –OH group and hydrogen bond between I− and –CH group. The sample with 30 wt% NaI showed the highest conductivity of 2.52 × 10–3 S cm−1, strongly influenced by the highest charge concentration (n) , not its mobility (μ). DSC analysis revealed an increase in glass transition temperature (Tg) with increasing salt content. TGA studies showed a decrease in thermal stability with salt inclusion. The transference number was found to be 0.99 for the highest conducting sample showing the primary charge carriers are ions. The highest conducting sample exhibited a mechanical strength of 15.42 MPa at room temperature, and it has been used to fabricate a battery to evaluate its suitability in energy storage devices. Graphical abstract: [Figure not available: see fulltext.]Graphical abstract created with https://biorender.com.
AB - In this paper, we report the effect of doping sodium iodide (NaI) salt into a polymer blend matrix of sodium carboxymethyl cellulose (NaCMC) and poly(vinyl alcohol) (PVA). Solution casting approach was used to prepare solid polymer electrolyte (SPE) films. The films were characterized by Fourier-transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), electrical impedance spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). XRD showed that NaI incorporation decreased the crystallinity of NaCMC/PVA-based SPE. FTIR technique confirmed the complexation of salt with polymer matrix due to the formation of the coordination bond between Na+ and –OH group and hydrogen bond between I− and –CH group. The sample with 30 wt% NaI showed the highest conductivity of 2.52 × 10–3 S cm−1, strongly influenced by the highest charge concentration (n) , not its mobility (μ). DSC analysis revealed an increase in glass transition temperature (Tg) with increasing salt content. TGA studies showed a decrease in thermal stability with salt inclusion. The transference number was found to be 0.99 for the highest conducting sample showing the primary charge carriers are ions. The highest conducting sample exhibited a mechanical strength of 15.42 MPa at room temperature, and it has been used to fabricate a battery to evaluate its suitability in energy storage devices. Graphical abstract: [Figure not available: see fulltext.]Graphical abstract created with https://biorender.com.
UR - https://www.scopus.com/pages/publications/85125768780
UR - https://www.scopus.com/pages/publications/85125768780#tab=citedBy
U2 - 10.1007/s10570-022-04483-z
DO - 10.1007/s10570-022-04483-z
M3 - Article
AN - SCOPUS:85125768780
SN - 0969-0239
VL - 29
SP - 3271
EP - 3291
JO - Cellulose
JF - Cellulose
IS - 6
ER -