Electrode assembly and secondary battery having the same
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United States of America Patent
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Sep 11, 2012
Grant Date -
Oct 8, 2009
app pub date -
Feb 6, 2009
filing date -
Apr 7, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A secondary battery, which may include an electrode assembly, a can having an upper opening to receive the electrode assembly and a cap assembly finishing the opening of the can is disclosed. The electrode assembly may include a positive electrode plate provided with a positive electrode active material layer, a negative electrode plate provided with a negative electrode active material layer, a separator interposed between the positive electrode plate and the negative electrode plate and an insulation coating layer coated on the positive electrode plate. The insulation coating layer may includes a first coating layer coated on the positive electrode coating portion. The insulation coating layer may contain olivine type lithium phosphate compound. A second coating layer coated on the first coating layer may contain ceramic powder and a binder.
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