Filler-embedded solid polymer electrolyte for lithium-ion battery application

Requirement for safer and more flexible energy storage has encouraged research in all solid state battery, employing conductive polymer membrane as electrolyte-cum-separator. Solid polymer electrolyte employs polymer as a matrix, with electrolyte salt dissolved in it. In this research, solid polymer electrolyte for lithium-ion battery application has been prepared using solution cast technique. LiBOB and PVDF-HFP were used as electrolyte salt and polymer matrix, respectively. Fillers were added in the solution mainly in the mission of reducing crystallinity allowing ion lithium to move more efficiently between electrodes, therefore increasing its ionic conductivity. In this experiment, we utilized SN, TiO2, and Al2O3 filler. Resulting free-standing membranes were characterized using FT-IR and SEM to observe its morphology and interaction between functional groups. The performance was tested using EIS against stainless steel plate to obtain bulk resistivity, which was then utilized to measure ionic conductivity. Amongst the three fillers, the most optimum performance was found in the SN-embedded solid polymer electrolyte with ionic conductivity of 7.77×10−9 S/cm.

AIP Conference Proceedings 2256, 030016 (2020)

DOI: 10.1063/5.0014655

No. Arsip : LIPI-20200916
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