Chemically oxidized γ-MnO2 for lithium secondary batteries: Structure and intercalation/deintercalation properties

Won Il Jung, Miki Nagao, Cédric Pitteloud, Keiji Itoh, Atsuo Yamada, Ryoji Kanno

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Structural changes of chemically lithiated γ-MnO2 during chemical oxidation were characterized by X-ray diffraction combined with a stacking fault analysis and neutron total scattering with a local structure analysis. Lithium ions intercalate into the crystallographic sites around "Ruetschi" protons prior to those around "Coleman" protons for the chemically lithiated γ-MnO2. The "Ruetschi" and "Coleman" protons have O-H bond lengths of 1.2 A° and 1.9 A°, respectively, which decreased after the chemical oxidation. The chemically intercalated lithium ions are placed at the center of oxygen octahedra with an O-Li length of 1.9 A°.

Original languageEnglish
Pages (from-to)800-806
Number of pages7
JournalJournal of Materials Chemistry
Volume19
Issue number6
DOIs
Publication statusPublished - Feb 2 2009
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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