	US 12,482,867 B2
	Non-aqueous electrolyte solution, electrochemical device precursor, electrochemical device, and method of producing electrochemical device
Yusuke Shimizu, Ichihara (JP)
Assigned to MITSUI CHEMICALS, INC., Tokyo (JP)
Appl. No. 17/910,128
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Feb. 7, 2022, PCT No. PCT/JP2022/004642 § 371(c)(1), (2) Date Sep. 8, 2022, PCT Pub. No. WO2022/196176, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 2021-045217 (JP), filed on Mar. 18, 2021; and application No. 2021-137178 (JP), filed on Aug. 25, 2021.
Prior Publication US 2024/0213548 A1, Jun. 27, 2024
Int. Cl. H01M 4/505 (2010.01); C01G 53/50 (2025.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/0567 (2010.01); H01M 10/42 (2006.01); H01M 10/44 (2006.01)

CPC H01M 10/4235 (2013.01) [C01G 53/50 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 10/446 (2013.01); C01P 2006/40 (2013.01)]

10 Claims

1. A non-aqueous electrolyte solution, comprising:

an chain sulfone compound (I) represented by the following Formula (I); and

a cyclic sulfone compound (II) represented by the following Formula (II),

wherein a content of the chain sulfone compound (I) is from 0.01% by mass to 10% by mass with respect to a total amount of the non-aqueous electrolyte solution:

wherein, in Formula (I), each of R¹¹and R¹²independently represents an alkyl group having from 1 to 6 carbon atoms, or a fluorinated alkyl group having from 1 to 6 carbon atoms:

wherein, in Formula (II), R²¹represents an a group represented by Formula (ii-1), and * represents a binding site; and

wherein, in Formula (ii-1), R²²represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms, or a group represented by Formula (ii-2), R²³represents an alkyl group having from 1 to 2 carbon atoms, or a group represented by Formula (ii-2), and at least one of R²²or R²³is a group represented by Formula (ii-2).