Preparation and characteristics of (NayAg1-y)2V4O11 for lithium secondary battery cathodes

Jin Kawakita, Koji Makino, Yasushi Katayama, Takashi Miura, Tomiya Kishi

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Layered vanadium oxides, (NayAg1-y)2V4O11 (y = 0.77-0.98) are prepared by substituting part of the silver ions in Ag2V4O11 with sodium ions using an ion-exchange reaction in molten nitrate salts. These oxides exhibit less capacity loss during repeated cycling than non-substituted oxide, Ag2V4O11. This is mainly because the structural change into an amorphous state upon lithiation is restricted by the pillar effect in which unextractable sodium ions connect adjacent layers during lithium insertion/extraction.

Original languageEnglish
Pages (from-to)244-250
Number of pages7
JournalJournal of Power Sources
Volume75
Issue number2
DOIs
Publication statusPublished - 1998 Oct 1

Keywords

  • Discharge capacity
  • Ion exchange
  • Lithium
  • Silver vanadate
  • Sodium

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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