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

  • WATANABE Jun
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • FURUSAWA Masaki
    Institute for Materials Chemistry and Engineering, Kyushu University Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University
  • NAKAMOTO Kosuke
    Institute for Materials Chemistry and Engineering, Kyushu University Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University
  • SUN Yuchao
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University School of Materials Science and Engineering, Shanghai Jiao Tong University
  • TASHIMA Masatoshi
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • YAMAOKA Keiko
    Institute for Materials Chemistry and Engineering, Kyushu University
  • FUJIWARA Seiko
    Institute for Materials Chemistry and Engineering, Kyushu University
  • KIM Han Seul
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University Graduate School of Nanofusion Technology, Pusan National University
  • OKADA Shigeto
    Institute for Materials Chemistry and Engineering, Kyushu University Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University
  • ALBRECHT Ken
    Institute for Materials Chemistry and Engineering, Kyushu University Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University JST-PRESTO

説明

<p>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.</p>

収録刊行物

  • Electrochemistry

    Electrochemistry 90 (11), 117005-117005, 2022-11-29

    公益社団法人 電気化学会

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