Electrolyte solution for capacitors, electric double layer capacitor, and lithium ion capacitor
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United States of America Patent
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May 9, 2017
Grant Date -
Feb 19, 2015
app pub date -
Mar 6, 2013
filing date -
Mar 27, 2012
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Abstract
The present invention provides a highly conductive, highly voltage-resistant, and stable liquid electrolyte solution for capacitors which does not coagulate and is free from precipitation of salts in a wide temperature range, particularly at low temperatures, shows excellent electrical characteristics, and has excellent long-term reliability. The present invention also provides an electric double-layer capacitor and a lithium ion capacitor produced using the electrolyte solution for capacitors. The present invention relates to an electrolyte solution for capacitors including: an organic solvent; and a quaternary ammonium salt or lithium salt dissolved in the organic solvent, the organic solvent containing acetonitrile and a chain alkyl sulfonic compound represented by the formula (1):
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