Composite for Li-ion cells and the preparation process thereof
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United States of America Patent
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Nov 19, 2013
Grant Date -
Dec 9, 2010
app pub date -
Jun 3, 2010
filing date -
Jun 3, 2009
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Abstract
Disclosed herein is a composite for Li-ion cells, comprising an active material particle for Li-ion cells and an electronically conductive elastic material bound or attached to the active material particle. According to the present invention, the electronically conductive elastic material bound or attached to the active material particle allows the particle to maintain electronic contact with the electrode laminate matrix despite ongoing movement or expansion and contraction of the active material particles, such that the cycling efficiency and reversible capacity of the Li-ion cells prepared from the composite of the present invention is improved.
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