LiFePO4/C cathode powders prepared by spray pyrolysis from the colloidal spray solution containing nano-sized carbon black

Seo Hee Ju, Yun Chan Kang

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

Carbon-mixed LiFePO4 cathode powders were prepared by spray pyrolysis from a colloidal spray solution. The nano-sized carbon black added into the spray solution as its colloidal seed material affected the morphologies, mean sizes, and electrochemical properties of the LiFePO4 cathode powders. The precursor powders obtained from the aqueous spray solution without carbon black were large and had broad size distributions. On the other hand, the precursor powders obtained from the colloidal spray solution with carbon black were fine and had narrow size distributions. The initial discharge capacity of the LiFePO4 cathode powders obtained from the aqueous spray solution was 94 mAh g-1; it rose to 120 mAh g-1 when 5 wt.% carbon black was added into the spray solution, and then to 136 mAh g-1 when the amount of carbon black added into the solution was increased to 10 wt.% of the LiFePO4 powders. The addition of carbon black into the spray solution improved the cycle performance of the LiFePO4 powders.

Original languageEnglish
Pages (from-to)328-333
Number of pages6
JournalMaterials Chemistry and Physics
Volume107
Issue number2-3
DOIs
Publication statusPublished - 2008 Feb 15
Externally publishedYes

Keywords

  • Ceramics
  • Chemical synthesis
  • Electrical properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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