3,6-Diphenyltetrazine as Cathode Active Material for Sodium Ion Batteries

Jun Watanabe, Masaki Furusawa, Kosuke Nakamoto, Yuchao Sun, Masatoshi Tashima, Keiko Yamaoka, Seiko Fujiwara, Han Seul Kim, Shigeto Okada, Ken Albrecht

Research output: Contribution to journalArticlepeer-review

Abstract

3,6-diphenyltetrazine (DPT) is an electron-deficient π-conjugated molecule with a perfectly planar structure and high crystallinity. In this study, discharge-charge tests of crystalline DPT as a cathode material for sodium ion batteries were conducted. DPT showed an initial reversible capacity of 102 mAh/g (theoretical capacity 114 mAh/g), corresponding to one electron reaction. The plateau of the discharge-charge profiles was observed at 1.9-2.1 V vs. Na/Na+. According to the ex-situ XRD, FT-IR, and XPS measurements to investigate the discharge-charge mechanism, the redox center was identified as the conjugated tetrazine ring. DPT was in a crystalline form in both the charged and discharged state and indicated the potential as a reversible Na ion host.

Original languageEnglish
Article number117005
JournalElectrochemistry
Volume90
Issue number11
DOIs
Publication statusPublished - 2022

All Science Journal Classification (ASJC) codes

  • Electrochemistry

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