Nonaqueous electrolyte secondary battery
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United States of America Patent
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Nov 5, 2019
Grant Date -
Jan 25, 2018
app pub date -
Feb 22, 2016
filing date -
Feb 27, 2015
priority date (Note) -
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Abstract
A nonaqueous electrolyte secondary battery including a positive electrode plate including a positive electrode current collector and a positive electrode mixture layer, formed thereon, containing a positive electrode active material; a negative electrode plate including a negative electrode current collector and a negative electrode mixture layer, formed thereon, containing a negative electrode active material; a separator: a nonaqueous electrolyte; an outer can; and a sealing body. The positive electrode and negative electrode plates are wound with the separator there between. The positive electrode active material contains a lithium-nickel composite oxide containing cobalt and aluminum as constituent elements. The negative electrode active material contains graphite and a silicon material. The negative electrode plate includes negative electrode current collector-exposed portions, located at both ends thereof in a longitudinal direction, not covered by the negative electrode mixture layer. The negative electrode current collector-exposed portions are each connected to a negative electrode tab.
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