Thermal, electrochemical and in-situ structural study of stabilized LiNiyCo1-y-zMzO2 (M = Al and Mg) lithium-ion cathode materials prepared by a soft chemistry route

A. D'Epifanio*, F. Croce, F. Ronci, V. R. Albertini, B. Scrosati, Enrico Traversa

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Doped LiNiyCo1-y-zMzO2, with M = Al and Mg, and z = 0.04 mole ratio, were prepared using a soft chemistry route. The thermal behaviour of these materials was studied to confirm their stability using differential scanning calorimetry (DSC). The reversibility and rate capabilities of the cathodes in lithium cells were characterized using electrochemical measurements. A recently developed in-situ x-ray technique was used to investigate the structural properties of the oxides upon galvanostatic cycling. The addition of Al and Mg, as dopants, was demonstrated to dramatically improve the stability of LiNi0.8Co0.2O2.

Original languageEnglish (US)
Pages (from-to)1519-1522
Number of pages4
JournalKey Engineering Materials
Volume206-213
Issue numberII
StatePublished - Nov 10 2001
Event7th Conference and Exhibition of the European Ceramic Society - Brugge, Belgium
Duration: Sep 9 2001Sep 13 2001

Keywords

  • Cathode stability
  • In-situ energy dispersive XRD
  • Li-Ni-Co oxides
  • Lithium ion battery

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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