Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2018 Jul 19;8(3):45.
doi: 10.3390/membranes8030045.

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

João C Barbosa  1 , José P Dias  2 , Senentxu Lanceros-Méndez  3   4 , Carlos M Costa  5   6
Affiliations
Review

Recent Advances in Poly(vinylidene fluoride) and Its Copolymers for Lithium-Ion Battery Separators

João C Barbosa et al. Membranes (Basel). .

Abstract

The separator membrane is an essential component of lithium-ion batteries, separating the anode and cathode, and controlling the number and mobility of the lithium ions. Among the polymer matrices most commonly investigated for battery separators are poly(vinylidene fluoride) (PVDF) and its copolymers poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE), poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), and poly(vinylidene fluoride-cochlorotrifluoroethylene) (PVDF-CTFE), due to their excellent properties such as high polarity and the possibility of controlling the porosity of the materials through binary and ternary polymer/solvent systems, among others. This review presents the recent advances on battery separators based on PVDF and its copolymers for lithium-ion batteries. It is divided into the following sections: single polymer and co-polymers, surface modification, composites, and polymer blends. Further, a critical comparison between those membranes and other separator membranes is presented, as well as the future trends on this area.

Keywords: PVDF; battery separator; copolymers; lithium-ion batteries.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Schematic representation of a lithium ion battery and its working operation.
Figure 2
Figure 2
Ideal values for the main requirements of a separator membrane.
Figure 3
Figure 3
Manufacturing of a testing cell based on PVDF-CTFE separators [47], with copyright permission from Springer Nature.
Figure 4
Figure 4
Phase diagram of the ternary mixture—PVDF–HFP, acetone, and non-solvent—in order to control PVDF-HFP membrane morphology [46], with copyright permission from the Royal Society of Chemistry.
Figure 5
Figure 5
(a) Cross-section scanning electron microscopy (SEM) images of the γ-Al2O3/PVDF-HFP/TTT(95/5/2)- coated PE separator and (b) relative discharge capacities as a function of the C-rate [13], with copyright permission from Elsevier.
Figure 6
Figure 6
(a) SEM images of separators microstructure and (b) cycle performance of cells assembled [70], with copyright permission from Elsevier.
Figure 7
Figure 7
Preparation of PVDF-HFP/CA nanofiber separators for lithium ion batteries [140], with copyright permission from the American Chemical Society.
See this image and copyright information in PMC

References

    1. Megahed S., Ebner W. Lithium-ion battery for electronic applications. J. Power Sources. 1995;54:155–162. doi: 10.1016/0378-7753(94)02059-C. - DOI
    1. Oliveira J., Correia V., Castro H., Martins P., Lanceros-Mendez S. Polymer-based smart materials by printing technologies: Improving application and integration. Add. Manuf. 2018;21:269–283. doi: 10.1016/j.addma.2018.03.012. - DOI
    1. Goodenough J.B., Park K.S. The li-ion rechargeable battery: A perspective. JACS. 2013;135:1167–1176. doi: 10.1021/ja3091438. - DOI - PubMed
    1. Lanceros-Méndez S., Costa C.M. Printed Batteries: Materials, Technologies and Applications. Wiley; Hoboken, NJ, USA: 2018.
    1. Manthiram A. An outlook on lithium ion battery technology. ACS Cent. Sci. 2017;3:1063–1069. doi: 10.1021/acscentsci.7b00288. - DOI - PMC - PubMed

LinkOut - more resources