公开(公告)号：US20230187694A1

公开(公告)日：2023-06-15

申请号：US17922561

申请日：2021-04-28

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Akinori TANI ,  Junpei TERADA ,  Takaya YAMADA ,  Kae FUJWARA

IPC: H01M10/0565 ,  H01M10/0525

CPC classification number: H01M10/0565 ,  H01M10/0525 ,  H01M2300/0082

Abstract: A composite containing a fluorine-containing copolymer, an alkali metal salt, and an ionic liquid. The fluorine-containing copolymer essentially contains: a structural unit represented by formula (1): —[CR1R2—CR3R4]— wherein R1 to R4 are each independently H, F, Cl, CF3, or OR10, where R10 is an organic group having 1 to 8 carbon atoms, provided that at least one of R1 to R4 is F; and a structural unit represented by formula (2): —[CR5R6—CR7R8]— wherein R5 to R8 are each independently H, F, an alkyl group having 1 to 3 carbon atoms, a functional group containing a heteroatom other than the fluorine atom, or a group containing the functional group. At least one of R5 to R8 is a functional group containing a heteroatom other than the fluorine atom or a group containing the functional group, and the composite has a volatile content of 0.1 mass % or less.