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Proton Migration In 2-Hec-Nh4 Cl Solid Polymer Electrolytes Via Ftir-
Impedance Approaches
Muhammad Faiz bin Tajudeen Sahib
Supervisor: Dr. Khadijah Hilmun Binti Kamarudin
Co-Supervisor: Assoc. Prof. Dr. Mohd Ikmar Nizam Bin Hj. Mohamad Isa
Bachelor of Applied Science (Electronics and Instrumentation Physics)
School of Ocean Engineering
The ionic conductivity of solid polymer electrolyte (SPE) can be enhanced by doping
with ammonium salts due to its good proton donor capability. In this work, a new
SPEs was prepared using 2-hydroxyethyl cellulose (2-HEC) incorporated with different
ammonium chloride (NH4Cl) salt composition via solution casting method. Ionic
conductivity was found to enhance from to 2.41 x 10 -6 S/cm to 8.83 x 10 -4 S/cm with
the addition of 12 wt.% NH4Cl. Fourier transform infrared (FTIR) analysis revealed the
interactions between 2­HEC and NH4Cl were observed by the shifting of C-H peak from
1454 cm -1 to 1445 cm -1 and the presence of new N-H peak in the O-H region at 3265
cm -1 . FTIR deconvolution revealed that the percentage of free ion tend to be higher.
Based on the impedance and FTIR analyses, conduction mechanism in 2-HEC-NH4Cl
SPEs was proposed and discussed.
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