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3,6-Diphenyltetrazine as Cathode Active Material for Sodium Ion Batteries (Supporting Information)

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posted on 24.11.2022, 01:18 authored by Jun WATANABE, Masaki FURUSAWA, Kosuke NAKAMOTO, Yuchao SUN, Masatoshi TASHIMA, Keiko YAMAOKA, Seiko FUJIWARA, Han Seul KIM, Shigeto OKADA, Ken ALBRECH

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.

Funding

Ministry of Education, Culture, Sports, Science and Technology, Japan

Application of curved nanocarbon to active material for secondary batteries

Japan Society for the Promotion of Science

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Creation of chemical reaction technology using active orbital deformation by electric field

Japan Science and Technology Agency

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Kyushu University Platform of Inter-/Transdisciplinary Energy Research (QPIT)

Industrial Science Research Promotion Foundation

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Corresponding author email address

albrecht@cm.kyushu-u.ac.jp

Copyright

© 2022 The Author(s).

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