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Porous PAN micro/nanofiber membranes with potential application as Lithium-ion battery separators: physical, morphological and thermal properties

  • Niloufar Sabetzadeh
  • Ali Akbar GharehaghajiEmail author
  • Mehran Javanbakht
ORIGINAL PAPER
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Abstract

The porous PAN micro/nanofiber membranes with an average diameter of 700–800 nm were produced in one step by electrospinning a ternary system of PAN/DMF/H2O with phase separation mechanism. Also, non-porous PAN micro/nanofiber membranes with a similar diameter were prepared. Physical, morphological, mechanical and thermal properties of the porous PAN micro/nanofiber membranes were characterized and compared with those of non-porous PAN membranes. Thermal shrinkage of the porous PAN micro/nanofiber membranes and the Celgard PP separators were examined to be 15% and 95%, respectively, after treating for 45 min at 200 °C. The porosity impacts of porous PAN micro/nanofiber membranes were explored on some of the effective properties in battery performance. The results revealed that the porous PAN micro/nanofiber membranes had a higher air permeability value than the Celgard PP separators, indicating that the porosity, interconnected pores and ionic conductivity were higher. The porous PAN micro/nanofiber membranes had an enhanced electrolyte wettability, small contact angle and large electrolyte uptake leading to be the most promising candidate for Li-ion battery (LIB) separators.

Keywords

Polyacrylonitrile Porous micro/nanofiber membrane Electrospinning Lithium-ion battery (LIB) Separator 

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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  • Niloufar Sabetzadeh
    • 1
    • 2
  • Ali Akbar Gharehaghaji
    • 1
    • 2
    Email author
  • Mehran Javanbakht
    • 3
    • 4
  1. 1.Group of Nanotechnology EngineeringAmirkabir University of TechnologyTehranIran
  2. 2.Department of Textile EngineeringAmirkabir University of TechnologyTehranIran
  3. 3.Department of ChemistryAmirkabir University of TechnologyTehranIran
  4. 4.Renewable Energy Research CenterAmirkabir University of TechnologyTehranIran

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