Significant improvement of electrochemical performance of AlF3-coated Li [Ni0.8 Co0.1 Mn0.1] O2 cathode materials

S. U. Woo, C. S. Yoon, K. Amine, I. Belharouak, Y. K. Sun

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136 Citations (Scopus)

Abstract

The particle surface of Li [Ni0.8 Co0.1 Mn0.1] O2 was modified with AlF3 as a coating material to improve the electrochemical properties. The effect of AlF3 coating on Li [Ni0.8 Co0.1 Mn0.1] O2 cathode was extensively studied with respect to the structural and electrochemical properties, and thermal stability. The AlF3 coating on Li [Ni0.8 Co0.1 Mn0.1] O2 particles improved the overall electrochemical properties, such as the cyclability, rate capability, and thermal stability, compared to pristine Li [Ni0.8 Co0.1 Mn0.1] O2. Electrochemical impedance spectroscopy and transmission electron microscopy showed that the AlF3 coating on Li [Ni0.8 Co0.1 Mn0.1] O2 particles played an important role in stabilizing the interface between the cathode and electrolyte.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume154
Issue number11
DOIs
Publication statusPublished - 5 Oct 2007
Externally publishedYes

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ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

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