	US 12,218,357 B2
	All-solid-state secondary battery using polymer binder made from unsaturated carboxylic acid ester not having hydroxyl groups and compound having a teriary amine group and method of manufacturing same
Keigo Aso, Minato-ku (JP); Taira Ohashi, Minato-ku (JP); Motohisa Azechi, Minato-ku (JP); Daisuke Sukeguchi, Minato-ku (JP); and Shingo Itai, Minato-ku (JP)
Assigned to ENEOS MATERIALS CORPORATION, Tokyo (JP)
Appl. No. 17/599,277
Filed by ENEOS MATERIALS CORPORATION, Tokyo (JP)
PCT Filed Mar. 6, 2020, PCT No. PCT/JP2020/009664 § 371(c)(1), (2) Date Sep. 28, 2021, PCT Pub. No. WO2020/203042, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-066166 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0190342 A1, Jun. 16, 2022
Int. Cl. H01M 4/62 (2006.01); C08F 220/18 (2006.01); H01M 4/139 (2010.01); H01M 10/0562 (2010.01)

CPC H01M 4/622 (2013.01) [C08F 220/1804 (2020.02); C08F 220/1808 (2020.02); C08F 220/1812 (2020.02); H01M 4/139 (2013.01); H01M 10/0562 (2013.01); H01M 2300/0068 (2013.01)]

14 Claims

1. A solid electrolyte sheet, comprising:

a layer comprising, in dried form, a solid electrolyte and a binder composition comprising a polymer (A) comprising, in polymerized form, (a1) an unsaturated carboxylic acid ester not having a hydroxyl group; and (a2) a tertiary amino compound comprising a tertiary amino group,

wherein the polymer (A) has a weight-average molecular weight (Mw) in a range of from 250,000 to 3,000,000, and

wherein an endothermic peak is observed at −10° C. or lower when differential scanning calorimetry (DSC) is performed on the polymer (A) in accordance with JIS K 7121,

wherein no electrolyte solution is present in the sheet or contacts the sheet.