03-03-2022 дата публикации
Номер: US20220069418A1
Принадлежит:
Provided is a nonaqueous electrolyte secondary battery porous layer which has both high-voltage resistance and adhesiveness. The nonaqueous electrolyte secondary battery porous layer contains: a block copolymer; and a filler, the block copolymer having: a block A containing, as a main component, units each represented by “—(NH—Ar—O—NHCO—Ar—CO)—”; and a block B containing, as a main component, units each represented by “—(NH—Ar13 NHCO—Ar—CO—)—”. Not less than 50% of all Areach have a structure in which two aromatic rings are connected by a sulfonyl bond. Not more than 50% of all Areach have a structure in which two aromatic rings are connected by a sulfonyl bond. 30% to 70% of all Arand Areach have a structure in which two aromatic rings are connected by a sulfonyl bond. 1. A nonaqueous electrolyte secondary battery porous layer comprising:a block copolymer; anda filler, [ {'br': None, 'sup': 1', '2, '—(NH—Ar—NHCO—Ar—CO)—\u2003\u2003Formula (1); and'}, 'a block A containing, as a main component, units each represented by the following Formula (1), {'br': None, 'sup': 3', '4, '—(NH—Ar—NHCO—Ar—CO)—\u2003\u2003Formula (2),'}, 'a block B containing, as a main component, units each represented by the following Formula (2)], 'the block copolymer having [{'sup': 1', '2', '3', '4, 'Ar, Ar, Ar, and Armay each vary from unit to unit;'}, {'sup': 1', '2', '3', '4, 'Ar, Ar, Ar, and Arare each independently a divalent group having one or more aromatic rings;'}, {'sup': '1', 'not less than 50% of all Areach have a structure in which two aromatic rings are connected by a sulfonyl bond;'}, {'sup': '3', 'not more than 50% of all Areach have a structure in which two aromatic rings are connected by a sulfonyl bond;'}, {'sup': 1', '3, '30% to 70% of all Arand Areach have a structure in which two aromatic rings are connected by a sulfonyl bond.'}], 'wherein2. The nonaqueous electrolyte secondary battery porous layer as set forth in claim 1 , wherein:not less than 50% of the units which ...
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