ACTIVE MATERIAL SHEET AND ELECTRODE USING THE SAME
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United States of America Patent
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Issued Date -
Jan 9, 2014
app pub date -
Jul 9, 2013
filing date -
Jul 9, 2012
priority date (Note) -
Abandoned
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Abstract
An active material sheet includes an active material that stores charge, and a binder that binds the active material. The active material is granular and 90% or more of active material particles have a particle diameter equal to or less than 20 μm. The active material particles include a first group of particles having a particle diameter equal to or less than 5 μm and a circularity ranging from 0.850 to 1.000 and a second group of particles having a particle diameter greater than 5 μm and equal to or less than 20 μm and a circularity ranging from 0.500 to 0.850.
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