Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency

S. Janakiraman; Abhijith Surendran; Sudipto Ghosh; S. Anandhan; A. Venimadhav

doi:10.1016/j.ssi.2016.05.020

Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency

S. Janakiraman, Abhijith Surendran, Sudipto Ghosh, S. Anandhan, A. Venimadhav^*

^*Corresponding author for this work

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

100 Scopus citations

Abstract

Electroactive separators are recent interest in self-charging rechargeable batteries. In this study, electrospun polyvinylidene fluoride (PVDF) is characterized as an electroactive separator for Na-ion batteries. The intrinsic β-phase with high porosity of the separator is confirmed from X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM) and Atomic Force Microscopy (AFM) studies. The electroactive separator is immersed in 1M NaClO₄-ethylene carbonate (EC)/diethyl carbonate (DEC) (1:1 by weight) solution. The physicochemical characteristics of electroactive separator electrolyte (EaSE) were investigated using sodium ion conductivity, ion transference number and contact angle measurements. Linear and cyclic voltammetry studies were also carried out for the electrolyte system to evaluate oxidation stability window. The inherent β-phases of the separator as obtained by electrospinning has an ionic conductivity of ~ 7.38 × 10^{- 4} S cm^{- 1} under ambient condition. Sodium ion cell made from EaSE with Na_0·66Fe_0.5Mn_0·5O₂ as cathode and Na metal as anode has displayed a stable cycle performance with a coulombic efficiency of 92% after 90 cycles.

Original language	English (US)
Pages (from-to)	130-135
Number of pages	6
Journal	Solid State Ionics
Volume	292
DOIs	https://doi.org/10.1016/j.ssi.2016.05.020
State	Published - Sep 1 2016
Externally published	Yes

Keywords

Electroactive separator
Electrospinning
Polyvinylidene fluoride
Sodium ion battery

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/j.ssi.2016.05.020

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title = "Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency",

abstract = "Electroactive separators are recent interest in self-charging rechargeable batteries. In this study, electrospun polyvinylidene fluoride (PVDF) is characterized as an electroactive separator for Na-ion batteries. The intrinsic β-phase with high porosity of the separator is confirmed from X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM) and Atomic Force Microscopy (AFM) studies. The electroactive separator is immersed in 1M NaClO4-ethylene carbonate (EC)/diethyl carbonate (DEC) (1:1 by weight) solution. The physicochemical characteristics of electroactive separator electrolyte (EaSE) were investigated using sodium ion conductivity, ion transference number and contact angle measurements. Linear and cyclic voltammetry studies were also carried out for the electrolyte system to evaluate oxidation stability window. The inherent β-phases of the separator as obtained by electrospinning has an ionic conductivity of ~ 7.38 × 10- 4 S cm- 1 under ambient condition. Sodium ion cell made from EaSE with Na0·66Fe0.5Mn0·5O2 as cathode and Na metal as anode has displayed a stable cycle performance with a coulombic efficiency of 92% after 90 cycles.",

keywords = "Electroactive separator, Electrospinning, Polyvinylidene fluoride, Sodium ion battery",

author = "S. Janakiraman and Abhijith Surendran and Sudipto Ghosh and S. Anandhan and A. Venimadhav",

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doi = "10.1016/j.ssi.2016.05.020",

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T1 - Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency

AU - Janakiraman, S.

AU - Surendran, Abhijith

AU - Ghosh, Sudipto

AU - Anandhan, S.

AU - Venimadhav, A.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - Electroactive separators are recent interest in self-charging rechargeable batteries. In this study, electrospun polyvinylidene fluoride (PVDF) is characterized as an electroactive separator for Na-ion batteries. The intrinsic β-phase with high porosity of the separator is confirmed from X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM) and Atomic Force Microscopy (AFM) studies. The electroactive separator is immersed in 1M NaClO4-ethylene carbonate (EC)/diethyl carbonate (DEC) (1:1 by weight) solution. The physicochemical characteristics of electroactive separator electrolyte (EaSE) were investigated using sodium ion conductivity, ion transference number and contact angle measurements. Linear and cyclic voltammetry studies were also carried out for the electrolyte system to evaluate oxidation stability window. The inherent β-phases of the separator as obtained by electrospinning has an ionic conductivity of ~ 7.38 × 10- 4 S cm- 1 under ambient condition. Sodium ion cell made from EaSE with Na0·66Fe0.5Mn0·5O2 as cathode and Na metal as anode has displayed a stable cycle performance with a coulombic efficiency of 92% after 90 cycles.

AB - Electroactive separators are recent interest in self-charging rechargeable batteries. In this study, electrospun polyvinylidene fluoride (PVDF) is characterized as an electroactive separator for Na-ion batteries. The intrinsic β-phase with high porosity of the separator is confirmed from X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscopy (FESEM) and Atomic Force Microscopy (AFM) studies. The electroactive separator is immersed in 1M NaClO4-ethylene carbonate (EC)/diethyl carbonate (DEC) (1:1 by weight) solution. The physicochemical characteristics of electroactive separator electrolyte (EaSE) were investigated using sodium ion conductivity, ion transference number and contact angle measurements. Linear and cyclic voltammetry studies were also carried out for the electrolyte system to evaluate oxidation stability window. The inherent β-phases of the separator as obtained by electrospinning has an ionic conductivity of ~ 7.38 × 10- 4 S cm- 1 under ambient condition. Sodium ion cell made from EaSE with Na0·66Fe0.5Mn0·5O2 as cathode and Na metal as anode has displayed a stable cycle performance with a coulombic efficiency of 92% after 90 cycles.

KW - Electroactive separator

KW - Electrospinning

KW - Polyvinylidene fluoride

KW - Sodium ion battery

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Electroactive poly(vinylidene fluoride) fluoride separator for sodium ion battery with high coulombic efficiency

Abstract

Keywords

ASJC Scopus subject areas

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