Hydration of sodium cobalt oxide

Hiroya Sakurai*, Minoru Osada, Eiji Takayama-Muromachi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


It was found that Na+ ions in NaxCoO2 can be partially substituted by H3O+ ions while maintaining a constant Co valence simply by immersion in water. The magnetic susceptibility of Nax(H3O)zCoO2 (x + Z = 0.70) changed drastically from Curie-Weiss type to Pauli paramagnetic type, indicating that the electronic band structure was modified by the isovalent ion substitution of Na+/H3O+. Two possible origins of the change in the electronic structure are discussed.

Original languageEnglish
Pages (from-to)6073-6076
Number of pages4
JournalChemistry of Materials
Issue number25
Publication statusPublished - 2007 Dec 11
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Materials Chemistry


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