US 12,015,121 B2
Electrolyte, electrochemical device, lithium ion secondary battery, and module
Tomoya Hidaka, Osaka (JP); Masakazu Kinoshita, Osaka (JP); Yoshiko Kuwajima, Osaka (JP); Takaya Yamada, Osaka (JP); Shigeaki Yamazaki, Osaka (JP); Kenzou Takahashi, Osaka (JP); and Yuuki Suzuki, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/050,517
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
PCT Filed Apr. 11, 2019, PCT No. PCT/JP2019/015829
§ 371(c)(1), (2) Date Oct. 26, 2020,
PCT Pub. No. WO2019/208246, PCT Pub. Date Oct. 31, 2019.
Claims priority of application No. 2018-086898 (JP), filed on Apr. 27, 2018.
Prior Publication US 2021/0119256 A1, Apr. 22, 2021
Int. Cl. H01M 10/0567 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 10/0567 (2013.01) [H01M 10/0525 (2013.01); H01M 2300/0025 (2013.01)] 8 Claims
 
1. An electrolyte solution comprising a compound (1-2) represented by the following formula (1-2),

OG Complex Work Unit Chemistry
the formula (1-2) being

OG Complex Work Unit Chemistry
wherein R121 to R123 are each individually a C1-C4 linear or branched alkyl group, and at least one selected from R121 to R123 is a C3-C4 branched alkyl group.