An aqueous, electrolyte-type, rechargeable device utilizing a hydrophilic radical polymer-cathode

Kenichiroh Koshika, Naoki Sano, Kenichi Oyaizu, Hiroyuki Nishide

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

A hydrophilic poly(vinyl ether)-backbone polymer bearing a pendant TEMPO radical, poly(2, 2, 6, 6-tetramethylpiperidinyloxy-4-yl vinyl ether) (PTVE), was designed as a cathodeactive material, which displays a reversible one-electron redox capability, even in an aqueous electrolyte. The PTVE layer coated on a current collector demonstrated a rapid charging-discharging rate based on the combination of the redox-active nitroxide radicals built into the hydrophilic polymer and the aqueous electrolyte that possessed a high electrical conductivity. A test cell fabricated with a PTVE cathode, a zinc anode, and an aqueous electrolyte gave an output voltage of 1.7V and showed the ability to be recharged more than 500 times rechargeability.

Original languageEnglish
Pages (from-to)1989-1995
Number of pages7
JournalMacromolecular Chemistry and Physics
Volume210
Issue number22
DOIs
Publication statusPublished - 2009 Nov 24

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Keywords

  • Electrode-active materials
  • Hydrophilic polymers
  • Poly(vinyl ethers)
  • Radical polymers
  • Redox polymers
  • Secondary batteries

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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