US 12,087,924 B2
Gas adsorption sheet for secondary batteries
Kota Nakao, Ibaraki (JP); Daisuke Shimokawa, Ibaraki (JP); Shigeki Kawabe, Ibaraki (JP); Mitsuru Nozue, Tokyo (JP); and Minoru Yagi, Tokyo (JP)
Assigned to NITTO DENKO CORPORATION, Osaka (JP)
Appl. No. 17/256,730
Filed by NITTO DENKO CORPORATION, Ibaraki (JP)
PCT Filed Jun. 17, 2019, PCT No. PCT/JP2019/023917
§ 371(c)(1), (2) Date Dec. 29, 2020,
PCT Pub. No. WO2020/012878, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 2018-130808 (JP), filed on Jul. 10, 2018.
Prior Publication US 2021/0257684 A1, Aug. 19, 2021
Int. Cl. H01M 10/52 (2006.01); B01D 53/02 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/523 (2013.01) [B01D 53/02 (2013.01); H01M 10/0525 (2013.01); B01D 2253/1085 (2013.01); B01D 2253/25 (2013.01); B01D 2253/304 (2013.01); B01D 2257/204 (2013.01); B01D 2257/502 (2013.01); B01D 2257/504 (2013.01); B01D 2257/80 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A gas adsorption sheet for a secondary battery, comprising:
a heat-resistant base material; and
a gas adsorption layer arranged on at least one surface of the heat-resistant base material,
wherein the gas adsorption layer contains:
an acrylic resin; and
gas adsorbent particles each of which is formed of an inorganic porous material having pores, and is capable of adsorbing a gas,
wherein the acrylic resin contains a constituent unit derived from a (meth)acrylic acid alkyl ester,
wherein the (meth)acrylic acid alkyl ester has a linear or branched alkyl group having 4 to 12 carbon atoms,
wherein a content of a constituent unit derived from a (meth)acrylic acid alkyl ester having a branched alkyl group in the acrylic resin is from 20 parts by weight to 100 parts by weight with respect to 100 parts by weight of the constituent unit derived from the (meth)acrylic acid alkyl ester, and
wherein a material for forming the heat-resistant base material is polyamide imide, polyetherimide, polyphenylene sulfide, polyethylene naphthalate, polyimide, or polyetheretherketone.