Poly(Acrylic acid)⁻Based Hybrid Inorganic⁻Organic Electrolytes Membrane for Electrical Double Layer Capacitors Application

Chiam-Wen Liew; H M Ng; Arshid Numan; S Ramesh

doi:10.3390/polym8050179

Poly(Acrylic acid)⁻Based Hybrid Inorganic⁻Organic Electrolytes Membrane for Electrical Double Layer Capacitors Application

Polymers (Basel). 2016 May 18;8(5):179. doi: 10.3390/polym8050179.

Authors

Chiam-Wen Liew^{1

2}, H M Ng³, Arshid Numan⁴, S Ramesh⁵

Affiliations

¹ Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, LembahPantai, 50603 Kuala Lumpur, Malaysia. liewchiamwen85@gmail.com.
² School of Foundation Studies, Xiamen University Malaysia Campus, Jalan Suria Serenia 1, Bandar Serenia, 43900 Sepang, Malaysia. liewchiamwen85@gmail.com.
³ Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, LembahPantai, 50603 Kuala Lumpur, Malaysia. nghonming@hotmail.com.
⁴ Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, LembahPantai, 50603 Kuala Lumpur, Malaysia. numan.arshed@yahoo.com.
⁵ Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, LembahPantai, 50603 Kuala Lumpur, Malaysia. rameshtsubra@gmail.com.

Abstract

Nanocomposite polymer electrolyte membranes (NCPEMs) based on poly(acrylic acid)(PAA) and titania (TiO₂) are prepared by a solution casting technique. The ionic conductivity of NCPEMs increases with the weight ratio of TiO₂.The highest ionic conductivity of (8.36 ± 0.01) × 10^-4 S·cm^-1 is obtained with addition of 6 wt % of TiO₂ at ambient temperature. The complexation between PAA, LiTFSI and TiO₂ is discussed in Attenuated total reflectance-Fourier Transform Infrared (ATR-FTIR) studies. Electrical double layer capacitors (EDLCs) are fabricated using the filler-free polymer electrolyte or the most conducting NCPEM and carbon-based electrodes. The electrochemical performances of fabricated EDLCs are studied through cyclic voltammetry (CV) and galvanostatic charge-discharge studies. EDLC comprising NCPEM shows the specific capacitance of 28.56 F·g^-1 (or equivalent to 29.54 mF·cm^-2) with excellent electrochemical stability.

Keywords: EDLCs; TiO2; capacitance; nanocomposite polymer electrolyte membrane; poly(acrylic acid).