On the possibility of polystyrene-derived carbon coating for NASICON-type Na3V2(PO4)3 composites as cathode materials for sodium-ion batteries

Dai Okada, Takumi Fugane, Yuka Matsumoto, Takuya Hasegawa, Atsushi Itadani, Kazuyoshi Uematsu, Kenji Toda, Hideki Hashimoto, Jun Takada, Mineo Sato

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1 Citation (Scopus)

Abstract

We here prepared polystyrene-derived carbon-coated Na3V2(PO4)3 composite (NVP/C) cathode materials via a solid-phase reaction using a mixture of NVP precursor and polystyrene (as the carbon source), followed by calcination at high temperatures. Using this method, we were able to obtain active NVP materials with relatively high purity while allowing a uniform surface coating with carbon layers about 3-4 nm thick. This structure significantly prevented NVP particle growth even after calcination at high temperatures. The NVP/C material calcined at 700°C exhibited the best charge-discharge performance among the samples studied.

Original languageEnglish
Pages (from-to)322-325
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume125
Issue number4
DOIs
Publication statusPublished - 2017 Apr
Externally publishedYes

Keywords

  • Carbon-coating method
  • NASICON compounds
  • Polystyrene
  • Sodium-ion secondary battery
  • Solid state reaction

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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