Positive active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery comprising the same
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United States of America Patent
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Oct 13, 2015
Grant Date -
Aug 11, 2005
app pub date -
Feb 4, 2005
filing date -
Feb 6, 2004
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Abstract
The present invention relates to a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery comprising the same. The positive active material includes a lithium/nickel-based compound wherein primary particles having an average particle diameter ranging from 1 μm to 4 μm are agglomerated to form secondary particles. The positive active material of the present invention has excellent electrochemical performance and outstanding inhibition to swelling at high temperatures.
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