Triethylene glycol assisted synthesis of pure tavorite LiFeSO4F cathode material for Li-ion battery

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Shi-Liu Yang
  • Li-Ping Wang
  • Ru-Guang Ma
  • Zhou-Guang Lu
  • Liu-Jiang Xi
  • Ming-Jun Hu
  • Yu-Cheng Dong

Detail(s)

Original languageEnglish
Journal / PublicationJournal of the Electrochemical Society
Volume160
Issue number5
Online published12 Mar 2013
Publication statusPublished - 2013

Abstract

Pure tavorite-structured lithium iron fluorosulphate (LFSF: LiFeSO 4F) cathode material was successfully synthesized using newly prepared sub-micro sized lithium fluoride (LiF) and ferrous sulfate monohydrate (FeSO4 · H2O) as the precursors in triethylene glycol (TEG) medium. Experimental parameters, such as reaction temperature and time, polyol media, and different size of LiF, were investigated to see their influences on the phase formation of the t-LFSF. XRD and SEM were used to characterize the as-prepared precursors and t-LFSF. The product exhibited a capacity of 92 mA h g-1 at 0.05 C rate (1 C corresponding to 151 mA g-1 of current rate) and a capacity retention of 60% in reference to the initial capacity 34.5 mA h g-1 after 100 cycles at 0.2 C. The apparent lithium diffusion coefficient of the t-LFSF was firstly calculated to be about 4.99 × 10-13 cm2 s-1 by cyclic voltammetry (CV) method. © 2013 The Electrochemical Society.

Citation Format(s)

Triethylene glycol assisted synthesis of pure tavorite LiFeSO4F cathode material for Li-ion battery. / Yang, Shi-Liu; Wang, Li-Ping; Ma, Ru-Guang; Lu, Zhou-Guang; Xi, Liu-Jiang; Hu, Ming-Jun; Dong, Yu-Cheng; Chung, C. Y.

In: Journal of the Electrochemical Society, Vol. 160, No. 5, 2013.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review