US 12,476,254 B2
Binder for solid-state secondary battery, slurry for solid-state secondary battery, method for forming layer for solid-state secondary battery and solid-state secondary battery
Kae Fujiwara, Osaka (JP); Takaya Yamada, Osaka (JP); Takahiro Furutani, Osaka (JP); and Junpei Terada, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Mar. 8, 2023, as Appl. No. 18/119,083.
Application 18/119,083 is a continuation of application No. PCT/JP2021/030584, filed on Aug. 20, 2021.
Claims priority of application No. 2020-151525 (JP), filed on Sep. 9, 2020.
Prior Publication US 2023/0223542 A1, Jul. 13, 2023
Int. Cl. H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/0562 (2010.01)
CPC H01M 4/623 (2013.01) [H01M 10/0525 (2013.01); H01M 10/0562 (2013.01); H01M 2300/0071 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A slurry for a solid-state secondary battery, the slurry comprising:
an oxide-based solid electrolyte, and
a binder,
wherein the binder comprises a fluorine-containing polymer comprising a vinylidene fluoride unit and a fluorinated monomer unit other than the vinylidene fluoride unit, wherein the fluorinated monomer unit is at least one copolymerization unit (A) selected from the group consisting of a monomer unit having a structure represented by formula (1) and a monomer unit having a structure represented by formula (2):

OG Complex Work Unit Chemistry
wherein Rf1 and Rf2 are each a linear or branched fluorinated alkyl or fluorinated alkoxy group with 1 to 12 carbon atoms, which optionally contains an oxygen atom between carbon-carbon atoms when the number of carbon atoms is 2 or more.