US 12,463,224 B2
Anode catalyst layer with high reversal tolerant capability for membrane electrode assemblies and fuel cells
Mingquan Zhao, Guangdong (CN); Shanyun Mo, Guangdong (CN); Jiaqiang Zhong, Guangdong (CN); Yunsong Yang, Guangdong (CN); Siyu Ye, Guangdong (CN); Yuquan Zou, Guangdong (CN); Junke Tang, Guangdong (CN); and Ning Sun, Guangdong (CN)
Assigned to SINOHYKEY TECHNOLOGY GUANGZHOU CO. LTD., Guangdong (CN)
Filed by SINOHYKEY TECHNOLOGY GUANGZHOU CO. LTD, Guangdong (CN)
Filed on May 6, 2022, as Appl. No. 17/738,365.
Application 17/738,365 is a continuation of application No. PCT/CN2021/099554, filed on Jun. 11, 2021.
Claims priority of application No. 202110506098.8 (CN), filed on May 10, 2021.
Prior Publication US 2022/0359885 A1, Nov. 10, 2022
Int. Cl. H01M 4/86 (2006.01); H01M 4/88 (2006.01); H01M 8/1004 (2016.01)
CPC H01M 4/8663 (2013.01) [H01M 4/8828 (2013.01); H01M 8/1004 (2013.01); H01M 2004/8684 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An anode catalyst layer with high reversal tolerant capability, comprising:
an anode inner catalyst layer between a proton exchange membrane and a gas diffusion layer; and
an anode outer catalyst layer between the gas diffusion layer and the anode inner catalyst layer,
wherein at least the anode inner catalyst layer contains a reversal tolerant catalyst and a hydrophilic additive, and a content of the hydrophilic additive in the anode inner catalyst layer is not less than a content of the hydrophilic additive in the anode outer catalyst layer, or a water retention capability of the anode inner catalyst layer is not less than a water retention capability of the anode outer catalyst layer, and
wherein the hydrophilic additive includes at least one of a molecular sieve, a nanoporous superabsorbent gel or a superporous hydrogel microparticle, and a surfactant containing a hydrophilic group;
wherein only the anode inner catalyst layer contains the hydrophilic additive.