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A novel polyphosphazene with nitroxide radical side groups as cathode‐active material in Li‐ion batteries
Author(s) -
Yeşilot Serkan,
Hacıvelioğlu Ferda,
Küçükköylü Sedat,
Demir Emrah,
Çelik Kamile Burcu,
DemirCakan Rezan
Publication year - 2019
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.4728
Subject(s) - polyphosphazene , electron paramagnetic resonance , materials science , nitroxide mediated radical polymerization , polymer , ion , fourier transform infrared spectroscopy , lithium (medication) , polymer chemistry , nuclear magnetic resonance , chemical engineering , organic chemistry , copolymer , chemistry , radical polymerization , medicine , physics , engineering , composite material , endocrinology
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.