An Ultrahigh Output Rechargeable Electrode of a Hydrophilic Radical Polymer/Nanocarbon Hybrid with an Exceptionally Large Current Density beyond 1 A cm-2

Kan Hatakeyama, Hisato Wakamatsu, Ryu Katagiri, Kenichi Oyaizu, Hiroyuki Nishide

Research output: Contribution to journalArticle

12 Citations (Scopus)


Facile charge transport by a hydrophilic organic radical-substituted polymer and the 3D current collection by a self-assembled mesh of single-walled carbon nanotube bundles lead to the operation of an ultrahigh-output rechargeable electrode. Exceptionally large current density beyond 1 A cm-2 and high areal capacity around 3 mAh cm-2 are achieved, which are 101-2 times larger than those of the previously reported so-called "ultrafast electrodes." A sub-millimeter-thick, flexible, highly safe organic redox polymer-based rechargeable device with an aqueous sodium chloride electrolyte is fabricated to demonstrate the superior performance.

Original languageEnglish
JournalAdvanced Materials
Publication statusAccepted/In press - 2018 Jan 1



  • Electrode-active materials
  • Radical molecules
  • Rechargeable devices
  • Redox polymers
  • Single-walled carbon nanotube

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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