High-Voltage Cr4+/Cr3+ Redox Couple in Polyanion Compounds

Kosuke Kawai, Wenwen Zhao, Shin Ichi Nishimura, Atsuo Yamada*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


Higher-voltage operation is crucial to increase the energy density of rechargeable batteries. Here we explored the Cr4+/Cr3+ redox couple in a polyanion framework for a high-voltage sodium battery cathode. An archetypal NASICON-phase Na3Cr2(PO4)3 exhibited a reversible redox activity at ca. 4.5 V versus Na/Na+, offering further scope for searching new high-voltage materials based on Cr4+/Cr3+ redox couple.

Original languageEnglish
Pages (from-to)928-931
Number of pages4
JournalACS Applied Energy Materials
Issue number3
Publication statusPublished - 2018 Mar 26
Externally publishedYes


  • Na-ion batteries
  • cathode
  • chromium
  • high-voltage
  • phosphate

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering


Dive into the research topics of 'High-Voltage Cr4+/Cr3+ Redox Couple in Polyanion Compounds'. Together they form a unique fingerprint.

Cite this