Positive electrode for nonaqeous electrolyte secondary battery and a nonaqueous electrolyte secondary battery
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United States of America Patent
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Nov 10, 2020
Grant Date -
Apr 27, 2017
app pub date -
Oct 21, 2016
filing date -
Oct 22, 2015
priority date (Note) -
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Abstract
There is provided a positive electrode for nonaqueous electrolyte secondary batteries having a high-density and a high folding strength. There is also provided a nonaqueous electrolyte secondary battery including such a positive electrode. The positive electrode has a high folding strength when it is used in a battery with a high current density, and a nonaqueous electrolyte secondary battery having such a positive electrode. The positive electrode has an electrode body having formed a folded portion at least at one part of the positive electrode. With respect to a cross-section of the positive electrode composition layer, a domain A extends from a central part to a surface side of a thickness direction, and a domain B extends from the central part to the current collector. The distribution of the binder in domain A and domain B are specified.
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