A novel polyphosphazene with nitroxide radical side groups as cathode-active material in Li-ion batteries

Yesilot S., Hacivelioglu F., Kucukkoylu S., Demir E., Celik K. B. , Demir-Cakan R.

POLYMERS FOR ADVANCED TECHNOLOGIES, vol.30, no.12, pp.2977-2982, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 12
  • Publication Date: 2019
  • Doi Number: 10.1002/pat.4728
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2977-2982
  • Keywords: cathode-active material, energy, Li-ion batteries, nitroxide radical, polyphosphazene, RECHARGEABLE BATTERIES, CONDUCTIVITY, POLYMERS
  • Gazi University Affiliated: No


A novel polyphosphazene carrying stable nitroxide aromatic radical groups as a pendant with four electrons involvement per repeating unit is synthesized. To do so, series of macromolecular substitution reactions of poly (dichlorophosphazene) with 3,5-dibromophenol, 2-methyl-2-nitrosopropane, and lead oxide, respectively, are performed. After characterization of the newly synthesized polymers by standard spectroscopic techniques (such as Fourier transform infrared [FT-IR], nuclear magnetic resonance [NMR], or electron paramagnetic resonance [EPR]), the targeted polymer is further investigated as a cathode-active material for rechargeable lithium-ion batteries (LIBs). The cell delivered a good rate performance with a discharge capacity of 100 mAh/g at a C/2 current density over 500 cycles.