Nonaqueous electrolyte for an ultracapacitor
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United States of America Patent
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May 19, 2020
Grant Date -
Nov 23, 2017
app pub date -
May 18, 2017
filing date -
May 20, 2016
priority date (Note) -
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Abstract
An ultracapacitor that contains a first electrode, second electrode, separator, nonaqueous electrolyte, and housing is provided. The first electrode comprises a first current collector electrically coupled to a first carbonaceous coating and the second electrode comprises a second current collector electrically coupled to a second carbonaceous coating. The nonaqueous electrolyte is in ionic contact with the first electrode and the second electrode, wherein the nonaqueous electrolyte contains an ionic liquid that is dissolved in a nonaqueous solvent at a concentration of about 1.0 mole per liter or more. The nonaqueous solvent has a boiling temperature of about 150° C. or more.
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