Electrochemical device
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United States of America Patent
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Apr 19, 2016
Grant Date -
Aug 6, 2015
app pub date -
Sep 21, 2012
filing date -
Sep 13, 2012
priority date (Note) -
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Abstract
An electrochemical device is provided with an electric storage element that is constituted by a first electrode sheet, a second electrode sheet, and a separator sheet installed between the two electrode sheets. The separator sheet includes: a first part (high liquid absorptivity part) sandwiched between the two electrode sheets; a second part (low liquid absorptivity part) extending outward from the two electrode sheets; and a third part (contact part) in contact with a rim surface of the second electrode sheet, whereby the electrochemical device can quickly and reliably resolve a phenomenon of the amount of electrolyte decreasing in the part of the separator sheet sandwiched between the two electrode sheets, even if the phenomenon occurs frequently.
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