Electric storage element
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United States of America Patent
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Dec 4, 2012
Grant Date -
Apr 22, 2010
app pub date -
Jan 18, 2008
filing date -
Jan 19, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is an electrical storage device having excellent safety and high battery capacity. Specifically disclosed is an electrical storage device comprising at least a positive electrode having a positive electrode active material layer and a positive electrode collector, a negative electrode having a negative electrode active material layer and a negative electrode collector, a separator and an organic electrolyte solution. This electrical storage device is characterized in that the negative electrode active material layer is composed of a metal complex oxide which absorbs and desorbs lithium ions, the positive electrode active material layer contains a carbonaceous material having a layered crystal structure, and the interlayer distance d002 of the layered crystal structure in the carbonaceous material is within the range of 0.36-0.38 nm.
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