Cathode electroactive material, production method therefor and secondary cell
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United States of America Patent
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May 10, 2005
Grant Date -
Jul 15, 2004
app pub date -
Dec 24, 2003
filing date -
Apr 26, 2000
priority date (Note) -
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Abstract
A cathode electroactive material for use in lithium ion secondary cells, process for producing the material, and lithium ion secondary cells using the cathode electroactive material, wherein the electroactive material predominantly comprises an Li—Mn composite oxide particles with the spinel structure and particles of the electroactive material have an average porosity of 15% or less, the porosity being calculated by employing the following equation:
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