Proton Conductor of Propylene Carbonate–Plasticized Carboxyl Methylcellulose–Based Solid Polymer Electrolyte

Abstract

Carboxyl methylcellulose (CMC) solid polymer electrolytes were prepared by utilizing oleic acid (OA) and different wt.% of propylene carbonate (PC) by using the solution casting technique. An ionic conductivity study of the films was done by using impedance spectroscopy. The highest ionic conductivity gained is 2.52 × 10⁻⁷ S cm⁻¹ at ambient temperature for sample CMC-OA-PC 10 wt.%. From transference number measurement (TNM), the value of cation diffusion coefficient, D₊, and ionic mobility, μ₊, was higher than the value of anion diffusion coefficient, D₋, and ionic mobility, μ₋. Thus, the results prove that the present samples were proton conductors.

Keywords:

• Carboxyl methylcellulose
• Conductivity
• Oleic acid
• Polymer electrolyte
• Propylene carbonate

Acknowledgments

The authors would like to thank MOHE for Master Scholarship, Department of Physical Sciences under the Faculty of Science and Technology, University Malaysia Terengganu for the help and support given for this work.