LITHIUM ION CAPACITOR

PROBLEM TO BE SOLVED: To provide a lithium ion capacitor having a small internal resistance and excellent low temperature characteristics, in which compatibility of the electrolytic solution and the negative electrode active material is high and no gas is generated during the pre-charging and float...

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Bibliographische Detailangaben
Hauptverfasser:	YASUDA TADASHI, WATANABE YUTAKA, TAGUCHI MAKOTO, HAYASHI TOSHIHITO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE ELECTRICITY
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a lithium ion capacitor having a small internal resistance and excellent low temperature characteristics, in which compatibility of the electrolytic solution and the negative electrode active material is high and no gas is generated during the pre-charging and float test.SOLUTION: The lithium ion capacitor has a positive electrode, a negative electrode formed of a negative electrode active material consisting of graphite-based composite particles, and an electrolytic solution consisting of a lithium salt solution in an aprotic organic solvent. The aprotic organic solvent of the electrolytic solution contains ethylene carbonate, ethyl methyl carbonate, and dimethyl carbonate, where the volume ratio of ethylene carbonate and the total of the ethyl methyl carbonate and dimethyl carbonate is 1:3-1:1.