Patent number: 7799469
Abstract: A nonaqueous electrolyte solution in which an electrolyte salt is dissolved in an organic solvent includes, includes at least one or more compounds selected from the silicon compounds represented by general formula (1), (2), or (3) below: (In the formulae, each of R1, R2, and R3 independently represents a C1-8 alkyl, C2-8 alkenyl, C2-8 alkynyl, or C6-8 aryl group; R4 represents a C1-8 alkylene, C2-8 alkenylene, C2-8 alkynylene, or C6-8 arylene group; and n represents 1 or 2. When n is 1, X represents a fluorine atom, trifluoromethyl group, C1-8 alkoxy group, C2-8 alkenyloxy group, C6-8 aryloxy group, or C2-8 acyloxy group, C1-8 sulfonyloxy group, isocyanato group, isothiocyanato group, or cyano group. When n is 2, X represents a C1-8 alkylene group, C1-8 alkylenedioxy group, C2-8 alkenylene group, C2-8 alkenylenedioxy group, C2-8 alkynylene group, C2-8 alkynylenedioxy group, C6-8 arylene group, C6-8 arylenedioxy group, C2-8 diacyloxy group, oxygen atom, or direct bond.
Type:
Grant
Filed:
April 13, 2007
Date of Patent:
September 21, 2010
Assignees:
Denso Corporation, Adeka Corporation
Inventors:
Kouhei Yamamoto, Satoru Suzuki, Manabu Yamada, Takayuki Taki, Atsuo Tomita, Hiroto Asano