Open AccessPotassium Hydroxide Doped With (Poly(Methyl Methacrylate) (PMMA) Polymer as Electrolyte for Electrolytic Double layer Supercapacitor (EDLC) Application
Author(s) -
Ibrahim Zakariya’u,
Abubakar Sifawa
Publication year - 2022
Publication title -
caliphate journal of science and technology
Language(s) - English
Resource type - Journals
eISSN - 2705-3121
pISSN - 2705-313X
DOI - 10.4314/cajost.v4i1.11
Subject(s) - materials science , electrolyte , polymer , conductivity , chemical engineering , poly(methyl methacrylate) , dielectric spectroscopy , fourier transform infrared spectroscopy , potassium hydroxide , ionic conductivity , conductive polymer , supercapacitor , methyl methacrylate , electrochemistry , polymer chemistry , electrode , polymerization , composite material , chemistry , engineering
The prime objective of the present paper is to develop polymer electrolyte doped with salt. A solution cast technique was adopted to develop a solid polymer electrolyte of polymer (Poly (methyl methacrylate) (PMMA) as host polymer and salt potassium hydroxide, KOH as dopant. Incorporation of salt increases the amophosity and homogeneity, decreases the surface roughness. Moreover, doping of salt (KOH) increases the overall conductivity of polymer electrolyte film. Electrochemical impedance spectroscopy (EIS) reveals the enhancement in conductivity (4 orders of magnitude) by salt doping. FTIR shows the complexation and composite nature of films. Polarized optical microscopy (POM) shows reduction in crystallinity which is further confirmed by Differential scanning calorimetry (DSC). Fabricated electrochemical double-layer supercapacitor using maximum conducting polymer salt electrolyte and symmetric carbon nanotubes electrodes shows specific capacitance of 21.86.
Keywords: Polymer electrolyte; conductivity; DSC; FTIR