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Membranes 2018, 8(3), 36; https://doi.org/10.3390/membranes8030036

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

1
Department of Chemical Engineering, Diponegoro University, Semarang 50275, Indonesia
2
Department of Chemical Engineering, Universitas Sebelas Maret, Surakarta 57126, Indonesia
3
Membrane Research Center, Diponegoro University, Semarang 50275, Indonesia
*
Author to whom correspondence should be addressed.
Received: 19 May 2018 / Revised: 18 June 2018 / Accepted: 22 June 2018 / Published: 1 July 2018
(This article belongs to the Section Membrane Preparation and Characterization)
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Abstract

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−1) at room temperature. A graphite/PEMs/LiFePO4 coin cell CR2032 showed excellent stability in cycling performance (average discharge capacity 127 mA h g−1). Based on these results, PEMs are promising materials to be used in Polymer Electrolyte Membranes in lithium-ion batteries. View Full-Text
Keywords: polymer electrolyte membranes; nano-clay; poly(vinylpyrrolidone); PVDF membranes polymer electrolyte membranes; nano-clay; poly(vinylpyrrolidone); PVDF membranes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Dyartanti, E.R.; Purwanto, A.; Widiasa, I.N.; Susanto, H. Ionic Conductivity and Cycling Stability Improvement of PVDF/Nano-Clay Using PVP as Polymer Electrolyte Membranes for LiFePO4 Batteries. Membranes 2018, 8, 36.

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