Ionic Conductivity and Cycling Stability Improvement of PVDF/Nano-Clay Using PVP as Polymer Electrolyte Membranes for LiFePO₄ Batteries

In this paper, we present the characteristics and performance of polymer electrolyte membranes (PEMs) based on poly(vinylidene fluoride) (PVDF). The membranes were prepared via a phase-inversion method (non-solvent-induced phase separation (NIPS)). As separators for lithium battery systems, additive...

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Bibliographic Details
Published in:Membranes (Basel) 2018-07, Vol.8 (3), p.36
Main Authors: Dyartanti, Endah R, Purwanto, Agus, Widiasa, I Nyoman, Susanto, Heru
Format: Article
Language:English
Subjects:
nano-clay
poly(vinylpyrrolidone)
polymer electrolyte membranes
PVDF membranes
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Summary:In this paper, we present the characteristics and performance of polymer electrolyte membranes (PEMs) based on poly(vinylidene fluoride) (PVDF). The membranes were prepared via a phase-inversion method (non-solvent-induced phase separation (NIPS)). As separators for lithium battery systems, additive modified montmorillonite (MMT) nano-clay served as a filler and poly(vinylpyrrolidone) (PVP) was used as a pore-forming agent. The membranes modified with an additive (8 wt % nano-clay and 7 wt % PVP) showed an increased porosity (87%) and an uptake of a large amount of electrolyte (801.69%), which generated a high level of ionic conductivity (5.61 mS cm ) at room temperature. A graphite/PEMs/LiFePO₄ coin cell CR2032 showed excellent stability in cycling performance (average discharge capacity 127 mA h g ). Based on these results, PEMs are promising materials to be used in Polymer Electrolyte Membranes in lithium-ion batteries.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes8030036