Redox equilibrium of a zwitterionic radical polymer in a non-aqueous electrolyte as a novel Li+ host material in a Li-ion battery

Il Seok Chae, Masafumi Koyano, Takashi Sukegawa, Kenichi Oyaizu, Hiroyuki Nishide

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22 Citations (Scopus)

Abstract

Poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate-co- styrenesulfonate) was prepared and utilized as a Li+ host material for a cathode in a Li-ion battery. The polymer allowed high density incorporation of the Li+ ion per repeating unit at a positive redox potential near 0.6 V vs. Ag/AgCl. Redox equilibrium involving the Li+ migration was proved by the theoretical approach based on the Nernst equation as well as a microgravimetry analysis using an electrochemical quartz crystal microbalance technique. A cell fabricated with the polymer as the cathode-active material showed a high power rate capability with an average discharging potential near 3.9 V vs. the lithium metal anode.

Original languageEnglish
Pages (from-to)9608-9611
Number of pages4
JournalJournal of Materials Chemistry A
Volume1
Issue number34
DOIs
Publication statusPublished - 2013 Sep 14

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ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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