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Electrospun nanofiber polyacrylonitrile coated separators to suppress the shuttle effect for long‐life lithium–sulfur battery
Author(s) -
Kiai Maryam Sadat,
Eroglu Omer,
Kizil Huseyin
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48606
Subject(s) - polyacrylonitrile , separator (oil production) , materials science , nanofiber , electrospinning , chemical engineering , coating , anode , graphene , lithium–sulfur battery , electrolyte , cathode , polymer chemistry , composite material , chemistry , nanotechnology , polymer , electrode , physics , engineering , thermodynamics
Polymeric coating on the separator with effective polysulfides diffusion inhibition can provide intimate contact between intermediate polysulfides and conductive layer of separator for high‐energy lithium–sulfur (Li–S) batteries. Herein, polyacrylonitrile – poly(1,5 ‐ diaminoanthraquinone) (PAN/PDAAQ) and PAN‐potassium functionalized graphene (PAN/K‐FGF) nanofibers are synthesized via electrospinning method and act as effective separators for Li–S batteries to minimize polysulfides diffusion toward the anode. PAN/K‐FGF coated separator shows capacity retention of 768 mAh g −1 after 100 cycles at 1C. The capacity maintains at 419 mAh g −1 after 500 cycles. PAN/PDAAQ nanofibers are coated on glass fiber separator functions as physical and chemical barrier for polysulfides diffusion. Therefore, the cell with PAN/PDAAQ coating on the separator demonstrates capacity retention of 881 mAh g −1 after 100 cycles at 1C and small capacity decay rate of 0.11% per cycle resulted in 800 cycles at 1C. PAN/PDAAQ could define as an ideal separator material for Li–S batteries. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48606.