Abstract:
This work is mainly focused on achieving energy challenges that can arise in future.
Solid electrolyte which is used in secondary battery is an attractive technology to meet
future energy demands as renewable energy resources. Solid electrolyte is next
generation technology comparing to liquid electrolytes because of its easy handling
easy processing and having flexible structure. The motive of current research work is
to make such solid electrolyte material for secondary battery, PEO based composite
polymer electrolytes were made to analyze the effect on conductivity of ions in solid
polymer electrolyte by the incorporation of nano-filler. Characteristics of samples that
were made with polyethylene oxide host polymer characterized with various
techniques like XRD analysis it was observed that PEO:Lithium Triflate with 10:1
ratio showed two peaks at 23.3° and 19.06° which is corresponding to crystalline phase
of the PEO, FTIR analysis identified presence of groups that are -OH, -CH, C=O and
Ti-O at 3500cm-1
, 2970 cm-1
, 1642 cm-1
, 640 cm-1
respectively, SEM confirms the
morphology of the samples and EIS conducted to obtain ionic conductivity of CPEs,
maximum ionic conductivity was calculated 2.08x10-1 mS/cm without any filler. TiO2
nano-filler was utilized to make composites. It is observed that with increasing TiO2
in the host polymer with fixed amount of PEO and salt there is significant decrease in
the crystallinity of the composite films comparing to pure PEO while increasing
amorphous region in the CPEs which is responsible for the conduction of ions. The
PEO and salt complex film has exhibited an increased conductivity which is around
five times greater in magnitude than that of the pure polymer.
