Fabrication and characterization of SiO2/PVDF composite nanofiber-coated PP nonwoven separators for lithium-ion batteries

Meltem Yanilmaz; Chen Chen; Xiangwu Zhang

doi:10.1002/polb.23387

Fabrication and characterization of SiO₂/PVDF composite nanofiber-coated PP nonwoven separators for lithium-ion batteries

Meltem Yanilmaz, Chen Chen, Xiangwu Zhang^*

^*Corresponding author for this work

North Carolina State University

Research output: Contribution to journal › Article › peer-review

89 Citations (Scopus)

Abstract

SiO₂/polyvinylidene fluoride (PVDF) composite nanofiber-coated polypropylene (PP) nonwoven membranes were prepared by electrospinning of SiO₂/PVDF dispersions onto both sides of PP nonwovens. The goal of this study was to combine the good mechanical strength of PP nonwoven with the excellent electrochemical properties of SiO₂/PVDF composite nanofibers to obtain a new high-performance separator. It was found that the addition of SiO₂ nanoparticles played an important role in improving the overall performance of these nanofiber-coated nonwoven membranes. Among the membranes with various SiO₂ contents, 15% SiO₂/PVDF composite nanofiber-coated PP nonwoven membranes provided the highest ionic conductivity of 2.6 × 10^-3 S cm^-1 after being immersed in a liquid electrolyte, 1 mol L^-1 lithium hexafluorophosphate in ethylene carbonate, dimethyl carbonate and diethyl carbonate. Compared with pure PVDF nanofiber-coated PP nonwoven membranes, SiO₂/PVDF composite fiber-coated PP nonwoven membranes had greater liquid electrolyte uptake, higher electrochemical oxidation limit, and lower interfacial resistance with lithium. SiO₂/PVDF composite fiber-coated PP nonwoven membrane separators were assembled into lithium/lithium iron phosphate cells and demonstrated high cell capacities and good cycling performance at room temperature.

Original language	English
Pages (from-to)	1719-1726
Number of pages	8
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	51
Issue number	23
DOIs	https://doi.org/10.1002/polb.23387
Publication status	Published - 1 Dec 2013
Externally published	Yes

Keywords

SiO nanoparticles
battery separators
electrospinning
fibers
nanocomposites, nanoparticles
polyvinylidene fluoride

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/polb.23387

Cite this

@article{7244ebc865b6470fbc197a843d30fd88,

title = "Fabrication and characterization of SiO2/PVDF composite nanofiber-coated PP nonwoven separators for lithium-ion batteries",

abstract = "SiO2/polyvinylidene fluoride (PVDF) composite nanofiber-coated polypropylene (PP) nonwoven membranes were prepared by electrospinning of SiO2/PVDF dispersions onto both sides of PP nonwovens. The goal of this study was to combine the good mechanical strength of PP nonwoven with the excellent electrochemical properties of SiO2/PVDF composite nanofibers to obtain a new high-performance separator. It was found that the addition of SiO2 nanoparticles played an important role in improving the overall performance of these nanofiber-coated nonwoven membranes. Among the membranes with various SiO2 contents, 15% SiO2/PVDF composite nanofiber-coated PP nonwoven membranes provided the highest ionic conductivity of 2.6 × 10-3 S cm-1 after being immersed in a liquid electrolyte, 1 mol L-1 lithium hexafluorophosphate in ethylene carbonate, dimethyl carbonate and diethyl carbonate. Compared with pure PVDF nanofiber-coated PP nonwoven membranes, SiO2/PVDF composite fiber-coated PP nonwoven membranes had greater liquid electrolyte uptake, higher electrochemical oxidation limit, and lower interfacial resistance with lithium. SiO2/PVDF composite fiber-coated PP nonwoven membrane separators were assembled into lithium/lithium iron phosphate cells and demonstrated high cell capacities and good cycling performance at room temperature.",

keywords = "SiO nanoparticles, battery separators, electrospinning, fibers, nanocomposites, nanoparticles, polyvinylidene fluoride",

author = "Meltem Yanilmaz and Chen Chen and Xiangwu Zhang",

year = "2013",

month = dec,

day = "1",

doi = "10.1002/polb.23387",

language = "English",

volume = "51",

pages = "1719--1726",

journal = "Journal of Polymer Science, Part B: Polymer Physics",

issn = "0887-6266",

publisher = "John Wiley & Sons Inc.",

number = "23",

}

TY - JOUR

T1 - Fabrication and characterization of SiO2/PVDF composite nanofiber-coated PP nonwoven separators for lithium-ion batteries

AU - Yanilmaz, Meltem

AU - Chen, Chen

AU - Zhang, Xiangwu

PY - 2013/12/1

Y1 - 2013/12/1

N2 - SiO2/polyvinylidene fluoride (PVDF) composite nanofiber-coated polypropylene (PP) nonwoven membranes were prepared by electrospinning of SiO2/PVDF dispersions onto both sides of PP nonwovens. The goal of this study was to combine the good mechanical strength of PP nonwoven with the excellent electrochemical properties of SiO2/PVDF composite nanofibers to obtain a new high-performance separator. It was found that the addition of SiO2 nanoparticles played an important role in improving the overall performance of these nanofiber-coated nonwoven membranes. Among the membranes with various SiO2 contents, 15% SiO2/PVDF composite nanofiber-coated PP nonwoven membranes provided the highest ionic conductivity of 2.6 × 10-3 S cm-1 after being immersed in a liquid electrolyte, 1 mol L-1 lithium hexafluorophosphate in ethylene carbonate, dimethyl carbonate and diethyl carbonate. Compared with pure PVDF nanofiber-coated PP nonwoven membranes, SiO2/PVDF composite fiber-coated PP nonwoven membranes had greater liquid electrolyte uptake, higher electrochemical oxidation limit, and lower interfacial resistance with lithium. SiO2/PVDF composite fiber-coated PP nonwoven membrane separators were assembled into lithium/lithium iron phosphate cells and demonstrated high cell capacities and good cycling performance at room temperature.

AB - SiO2/polyvinylidene fluoride (PVDF) composite nanofiber-coated polypropylene (PP) nonwoven membranes were prepared by electrospinning of SiO2/PVDF dispersions onto both sides of PP nonwovens. The goal of this study was to combine the good mechanical strength of PP nonwoven with the excellent electrochemical properties of SiO2/PVDF composite nanofibers to obtain a new high-performance separator. It was found that the addition of SiO2 nanoparticles played an important role in improving the overall performance of these nanofiber-coated nonwoven membranes. Among the membranes with various SiO2 contents, 15% SiO2/PVDF composite nanofiber-coated PP nonwoven membranes provided the highest ionic conductivity of 2.6 × 10-3 S cm-1 after being immersed in a liquid electrolyte, 1 mol L-1 lithium hexafluorophosphate in ethylene carbonate, dimethyl carbonate and diethyl carbonate. Compared with pure PVDF nanofiber-coated PP nonwoven membranes, SiO2/PVDF composite fiber-coated PP nonwoven membranes had greater liquid electrolyte uptake, higher electrochemical oxidation limit, and lower interfacial resistance with lithium. SiO2/PVDF composite fiber-coated PP nonwoven membrane separators were assembled into lithium/lithium iron phosphate cells and demonstrated high cell capacities and good cycling performance at room temperature.

KW - SiO nanoparticles

KW - battery separators

KW - electrospinning

KW - fibers

KW - nanocomposites, nanoparticles

KW - polyvinylidene fluoride

UR - http://www.scopus.com/inward/record.url?scp=84886640664&partnerID=8YFLogxK

U2 - 10.1002/polb.23387

DO - 10.1002/polb.23387

M3 - Article

AN - SCOPUS:84886640664

SN - 0887-6266

VL - 51

SP - 1719

EP - 1726

JO - Journal of Polymer Science, Part B: Polymer Physics

JF - Journal of Polymer Science, Part B: Polymer Physics

IS - 23

ER -