US 11,923,584 B2
Membrane for redox flow battery, method for producing membrane for redox flow battery, membrane electrode assembly for redox flow battery, cell for redox flow battery, and redox flow battery
Hiroko Kamochi, Tokyo (JP); Yuka Kanada, Tokyo (JP); Kazuya Kai, Tokyo (JP); and Junya Yamashita, Tokyo (JP)
Assigned to ASAHI KASEI KABUSHIKI KAISHA, Tokyo (JP)
Appl. No. 17/800,033
Filed by ASAHI KASEI KABUSHIKI KAISHA, Tokyo (JP)
PCT Filed Mar. 4, 2021, PCT No. PCT/JP2021/008480
§ 371(c)(1), (2) Date Aug. 16, 2022,
PCT Pub. No. WO2021/215126, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 2020-077754 (JP), filed on Apr. 24, 2020.
Prior Publication US 2023/0078901 A1, Mar. 16, 2023
Int. Cl. H01M 8/18 (2006.01); H01M 4/88 (2006.01); H01M 4/96 (2006.01); H01M 8/0289 (2016.01); H01M 4/86 (2006.01)
CPC H01M 8/188 (2013.01) [H01M 4/881 (2013.01); H01M 4/96 (2013.01); H01M 8/0289 (2013.01); H01M 2004/8684 (2013.01); H01M 2004/8689 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A membrane for a redox flow battery, comprising
a first ion-exchange resin layer,
an anion-exchange resin layer containing an anion-exchange compound, and
a second ion-exchange resin layer
in the presented order, wherein
a value obtained by dividing a thickness of the first ion-exchange resin layer by a thickness of the second ion-exchange resin layer is 0.7 or more and 1.3 or less, and
a thickness of the anion-exchange resin layer is 0.02 μm or larger and 3 μm or smaller.