Lithiation reactions of Zn- and Li-birnessites in non-aqueous solutions and their stabilities

Lihui Liu, Qi Feng, K. Yanagisawa, G. Bignall, T. Hashida

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20 Citations (Scopus)

Abstract

Zn- and Li-birnessites were synthesized from Na-birnessite by ion-exchange reactions. The ion-exchange reaction, chemical lithiation reaction in non-aqueous solution, and stability for these birnessites were investigated by XRD, TG-DTA, and chemical analyses. The Zn-birnessite showed greater thermal stability than Li-birnessite. The Zn- and Li-birnessites can be lithiated up to Li/Mn molar ratios of 0.45 and 1.08, respectively, by reaction in a Lil-acetonitrile solution. The lithiation of Zn-birnessite progressed by a redox topotactic reaction, but the Li-birnessite was unstable during the lithiation reaction. The lithiated Zn-birnessite showed greater thermal stability than lithiated Li-birnessite. The Zn species in the interlayer space of lithiated Zn-birnessite acts as a pillar for the stabilization of the layered structure.

Original languageEnglish
Pages (from-to)1315-1320
Number of pages6
JournalJournal of Materials Science
Volume37
Issue number7
DOIs
Publication statusPublished - 2002 Apr 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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