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Preparation of PVdF nanofiber membranes by electrospinning and their use as secondary battery separators

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Abstract.
This paper reports the development and characterization of polyvinylidene fluoride (PVdF) nanofiber
separators for high rate discharge secondary batteries. The preparation of PVdF nanofiber separators
was performed by an electrospinning method. The pore properties of PVdF nanofiber separators were
optimized by variation of spinning conditions, after post treatment and sheet forming. The optimized
PVdF nanofiber separators were characterized by scanning electron microscopy (SEM), pore properties,
mechanical/thermal characteristics, water/electrolyte uptakes and electric properties. The high porosity
(48%) led to a high electrolyte uptake level (142 wt%) which is necessary for thin batteries. The PVdF
nanofiber separators reached higher tensile strength of 14.8 MPa/cm2 and elongation of 117% and compared
to commercial PE separator, they also exhibit higher thermal stability, up to 135 ◦C under air. Also,
PVdF nanofiber separators showed excellent performance in tests of cyclic fading rates and high rates of
discharge.

Keywords: Secondary battery; Separator; Nanofiber; PVdF

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Informasi Detail

Judul Seri

Journal of Membrane Science

No. Panggil

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Penerbit

New York : Elsevier B.V.., 2011

Deskripsi Fisik

Journal of Membrane Science 378 (2011) 111– 116

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

378 (2011)

Subjek

KIMIA MATERIAL

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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