Electrochemical performance of Li2FeSiO4 as a new Li-battery cathode material

Anton Nytén, Ali Abouimrane, Michel Armand, Torbjörn Gustafsson, John O. Thomas

Research output: Contribution to journalArticle

687 Citations (Scopus)

Abstract

Phase-pure lithium iron silicate (Li2FeSiO4) has been prepared successfully. Its ambient temperature structure has been determined by X-ray diffraction and its electrochemical performance characterised at 60°C. The resulting cyclic voltammogram suggests a phase transition to a more stable structure after the first cycle. This could involve a structural ordering process from a solid-solution to a long-range-ordered structure. The initial charge capacity of 165 mAh/g (99% of the theoretical value) stabilises after a few cycles to around 140 mAh/g (84% of the theoretical value).

Original languageEnglish
Pages (from-to)156-160
Number of pages5
JournalElectrochemistry Communications
Volume7
Issue number2
DOIs
Publication statusPublished - 1 Feb 2005

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Keywords

  • Cathode material
  • Iron silicate
  • Lithium-ion battery

ASJC Scopus subject areas

  • Electrochemistry

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