US 11,862,815 B2
Air electrode/separator assembly and metal-air secondary battery
Ozora Kano, Nagoya (JP); Naomi Hashimoto, Nagoya (JP); and Naomi Saito, Nagoya (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Oct. 29, 2021, as Appl. No. 17/452,796.
Application 17/452,796 is a continuation of application No. PCT/JP2020/017830, filed on Apr. 24, 2020.
Claims priority of application No. 2019-105741 (JP), filed on Jun. 5, 2019; and application No. 2019-174427 (JP), filed on Sep. 25, 2019.
Prior Publication US 2022/0052422 A1, Feb. 17, 2022
Int. Cl. H01M 50/46 (2021.01); H01M 50/449 (2021.01); H01M 4/86 (2006.01); H01M 12/02 (2006.01); H01M 12/08 (2006.01)
CPC H01M 50/46 (2021.01) [H01M 4/8615 (2013.01); H01M 4/8657 (2013.01); H01M 12/02 (2013.01); H01M 12/08 (2013.01); H01M 50/449 (2021.01); H01M 2004/8689 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An air electrode/separator assembly, comprising:
a hydroxide ion conductive dense separator,
an interface layer comprising a hydroxide ion conductive material and an electron conductive material and covering one side of the hydroxide ion conductive dense separator, and
an air electrode layer provided on the interface layer and comprising an outermost catalyst layer composed of a porous current collector and a layered double hydroxide (LDH) covering a surface thereof,
wherein the outermost catalyst layer has a porosity of 60% or more.