Chemistry and Structure of Sony's Nexelion Li-ion Electrode Materials

Abstract

The composition and structure of Sony Corporation's new 14430 lithium-ion battery electrodes was investigated. It was observed that the anode is a composite consisting of an equal amount on a weight basis of graphite and an amorphous alloy phase. The alloy phase consists mainly of tin and cobalt, with a tin:cobalt ratio of about 1:1. The particle size of the alloy phase is less than 1 micron. For the cathode it was observed that it is a composite consisting of a majority LiCoO2 phase and a second phase (15 to 20 volume %) whose formula is of the form Li(CoyNi1.7xMnx)O2. The particle size of both phases is in the micron range with many particles for the Li(CoyNi1.7xMnx)O2 phase in the range between 10 and 20 microns.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2006
Accession Number
ADA479387

Entities

People

  • D. Foster
  • J. L. Allen
  • J. Wolfenstine
  • Jeffrey Read

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Cobalt
  • Cobalt Alloys
  • Composite Materials
  • Corporations
  • Diffraction
  • Electrodes
  • Elements
  • Graphitic Materials
  • Materials
  • Military Research
  • Particle Size
  • Particles
  • Spectra
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Battery Technology and Engineering
  • Materials Science and Engineering.
  • Spectroscopy.