	US 12,234,565 B2
	Composite electrolyte membrane
Kenta Minamibayashi, Otsu (JP); Yoshitsugu Funatsu, Otsu (JP); Yoko Sakiyama, Otsu (JP); Daisuke Ogata, Otsu (JP); and Daisuke Izuhara, Otsu (JP)
Assigned to Toray Industries, Inc., Tokyo (JP)
Appl. No. 16/971,148
Filed by Toray Industries, Inc., Tokyo (JP)
PCT Filed Mar. 25, 2019, PCT No. PCT/JP2019/012456 § 371(c)(1), (2) Date Aug. 19, 2020, PCT Pub. No. WO2019/188960, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 2018-064031 (JP), filed on Mar. 29, 2018.
Prior Publication US 2021/0095386 A1, Apr. 1, 2021
Int. Cl. C25B 13/02 (2006.01); B01D 69/10 (2006.01); B01D 69/12 (2006.01); B01D 71/48 (2006.01); B01D 71/52 (2006.01); C25B 1/04 (2021.01); C25B 9/19 (2021.01); C25B 11/056 (2021.01); C25B 11/069 (2021.01); C25B 13/08 (2006.01); F04B 45/047 (2006.01)

CPC C25B 13/02 (2013.01) [B01D 69/107 (2022.08); B01D 69/1213 (2022.08); B01D 71/48 (2013.01); B01D 71/5222 (2022.08); C25B 1/04 (2013.01); C25B 9/19 (2021.01); C25B 11/056 (2021.01); C25B 11/069 (2021.01); C25B 13/08 (2013.01); B01D 2325/0281 (2022.08); F04B 45/047 (2013.01)]

18 Claims

1. A composite electrolyte membrane comprising a composite layer that is a composite of a mesh fabric including a liquid crystal polyester fiber or a polyphenylene sulfide fiber, wherein a fiber that constitutes the mesh fabric has a fiber diameter of 10 μm or more and 50 μm or less, and satisfying conditions (1) and (2) shown below, and a polymer electrolyte, and a layer containing only a polymer electrolyte material in contact with either side or one side of the composite layer:

gauze thickness (μm)/fiber diameter (μm)<2.0; and (1)

opening (μm)/fiber diameter (μm)>1.0, (2)

wherein:

the mesh fabric is a woven fabric made of warp and weft,

the thickness of the composite layer is 10 μm or more and 50 μm or less, and

the mesh fabric has a gauze thickness of 50 μm or less.