US 11,973,231 B2
Membrane electrode assembly (MEA) for proton exchange membrane electrochemical cell
Srikanth Ranganathan, San Jose, CA (US); Vijay Radhakrishnan, San Jose, CA (US); and Vaibhav Nirgude, San Jose, CA (US)
Assigned to BLOOM ENERGY CORPORATION, San Jose, CA (US)
Filed by BLOOM ENERGY CORPORATION, San Jose, CA (US)
Filed on Jul. 6, 2023, as Appl. No. 18/347,953.
Application 18/347,953 is a division of application No. 17/744,710, filed on May 15, 2022.
Prior Publication US 2023/0361316 A1, Nov. 9, 2023
Int. Cl. H01M 4/88 (2006.01); H01M 4/86 (2006.01); H01M 4/90 (2006.01); H01M 8/1004 (2016.01); H01M 8/241 (2016.01)
CPC H01M 4/8803 (2013.01) [H01M 4/8657 (2013.01); H01M 4/8835 (2013.01); H01M 4/8875 (2013.01); H01M 4/8882 (2013.01); H01M 4/9058 (2013.01); H01M 8/1004 (2013.01); H01M 8/241 (2013.01); H01M 2004/8684 (2013.01); H01M 2004/8689 (2013.01); H01M 2300/0068 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A membrane electrode assembly, comprising:
an ionically-conductive proton exchange membrane;
an anode contacting a first side of the membrane, the anode comprising:
an anode gas diffusion layer,
a first anode catalyst layer containing first catalyst particles, a hydrophobic polymer bonding agent, and a first ionomer bonding agent that lacks functional chains on a molecular backbone; and
a second anode catalyst layer containing second catalyst particles and a second ionomer bonding agent that includes functional chains on a molecular backbone; and
a cathode contacting a second side of the membrane and comprising third catalyst particles and a cathode gas diffusion layer.