Quadruply Fused Aromatic Heterocycles toward 4 V-Class Robust Organic Cathode-Active Materials

Kan Hatakeyama-Sato*, Choitsu Go, Tomoki Akahane, Takahiro Kaseyama, Takuji Yoshimoto, Kenichi Oyaizu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Quadruply fused aromatic heterocycles are examined as 4 V-class organic cathode-active materials. A newly synthesized dimethylfluoflavin-substituted polymer displays reversible charge/discharge at high potentials of 3.5 and 4.1 V (vs. Li/Li+) as a cathode-active material for organic secondary batteries. The robust redox-active heterocycles enable the long cycle-life (>1000) while maintaining the high potential over 4 V. The linear polymer backbone and radical spin configuration in the heterocycles are the keys to enhancing the voltages and the cycle life.

Original languageEnglish
JournalBatteries and Supercaps
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • high-voltage organic cathodes
  • lithium battery
  • organic cathode-active material

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Electrochemistry

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