US 12,087,950 B2
Gas diffusion layer for metal-air battery, method of manufacturing the same, and metal-air battery including the same
Mokwon Kim, Suwon-si (KR); Joonhee Kim, Seoul (KR); Jungock Park, Yongin-si (KR); and Dongmin Im, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 2, 2021, as Appl. No. 17/366,407.
Application 17/366,407 is a continuation of application No. 15/979,567, filed on May 15, 2018, abandoned.
Claims priority of application No. 10-2017-0059912 (KR), filed on May 15, 2017; and application No. 10-2018-0054576 (KR), filed on May 11, 2018.
Prior Publication US 2021/0336277 A1, Oct. 28, 2021
Int. Cl. H01M 4/88 (2006.01); H01M 4/66 (2006.01); H01M 4/86 (2006.01); H01M 12/02 (2006.01); H01M 12/08 (2006.01); H01M 50/417 (2021.01); H01M 4/134 (2010.01); H01M 4/38 (2006.01); H01M 50/403 (2021.01); H01M 50/44 (2021.01)
CPC H01M 4/8807 (2013.01) [H01M 4/665 (2013.01); H01M 4/666 (2013.01); H01M 4/667 (2013.01); H01M 4/8615 (2013.01); H01M 4/8626 (2013.01); H01M 4/8817 (2013.01); H01M 12/02 (2013.01); H01M 12/08 (2013.01); H01M 50/417 (2021.01); H01M 4/134 (2013.01); H01M 4/382 (2013.01); H01M 4/663 (2013.01); H01M 4/8673 (2013.01); H01M 2004/8689 (2013.01); H01M 50/403 (2021.01); H01M 50/44 (2021.01)] 22 Claims
OG exemplary drawing
 
1. A gas diffusion layer for a metal-air battery, the gas diffusion layer comprising:
a porous layer comprising
a plurality of non-conductive fiber structures; and
a plurality of adhesive layers and a plurality of conductive carbon layers, wherein each of the plurality of adhesive layers and each of the plurality of conductive carbon layers is disposed on a surface of each non-conductive fiber structure of the plurality of non-conductive fiber structures,
wherein each conductive carbon layer of the plurality of conductive carbon layers comprises a carbon material,
wherein an adhesive layer of the plurality of adhesive layers is disposed on the surface of each non-conductive fiber structure and a conductive carbon layer of the plurality of conductive carbon layers is disposed directly on a surface of the adhesive layer, and
wherein the adhesive layer bonds the conductive carbon layer to the surface of each non-conductive fiber structure,
wherein a thickness of the conductive carbon layer is equal to or greater than about 1% and less than or equal to about 10% of an average thickness of the non-conductive fiber structure and
wherein the plurality of adhesive layers and the plurality of conductive carbon layers are alternately disposed 5 to 20 times on the surface of each non-conductive fiber structure, and the gas diffusion layer has a resistivity of less than 6,000 ohms per square.