ELECTROCHEMICAL CELL AND ELECTROCHEMICAL CAPACITOR
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United States of America Patent
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app pub date -
Mar 19, 2012
filing date -
Sep 18, 2009
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Abstract
An electrochemical cell includes a positive electrode, a negative electrode, and an electrolyte solution. The positive electrode and/or the negative electrode includes a penetrating portion that penetrates the electrodes in the thickness direction. Further, an electrochemical capacitor includes a positive electrode, a negative electrode, and an electrolyte solution. In a plane of projection in which a region carrying a negative electrode active material of the negative electrode is projected onto a region carrying a positive electrode active material of the positive electrode along a opposed direction, the ratio of an area carrying the positive electrode active material to an area carrying the negative electrode active material is less than 1.
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