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BLDP Ballard Power Systems

GRANT
Utility
Seal for solid polymer electrolyte fuel cell
10 Aug 21
A sealed membrane electrode assembly (MEA) and a method of sealing the MEA comprises the steps of providing a frame around a periphery of the MEA to form a framed MEA; providing a through-hole in the frame; placing the framed MEA into a seal mold, the seal mold comprising a reservoir region, a seal bead region, and at least one runner region; feeding a flow-processable seal material into the reservoir region in the seal mold that is aligned with the throughhole in the frame; feeding the flow-processable seal material from the reservoir region to the seal bead region through the at least one runner region; wherein a hydraulic diameter of the at least one runner region is less than a hydraulic diameter of the reservoir region.
Ian Stewart, Darcy McGowan, Emerson Gallagher
Filed: 11 Feb 16
APP
Utility
Membrane Electrode Assembly with Improved Cohesion
29 Apr 21
A membrane electrode assembly comprises an anode electrode comprising an anode catalyst layer; a cathode electrode comprising a cathode catalyst layer; and a polymer electrolyte membrane interposed between the anode electrode and the cathode electrode; wherein at least one of the anode and cathode catalyst layers comprises a block co-polymer comprising poly(ethylene oxide) and poly(propylene oxide).
Rajesh BASHYAM, Alan YOUNG
Filed: 13 Apr 18
APP
Utility
Flow Field Plate for Electrochemical Fuel Cells
11 Mar 21
A flow field plate comprises a first flow field surface, an opposing second surface, and at least one flow channel and at least one landing formed in the first flow field surface, wherein the landing comprises a main surface, at least a first protrusion and a second protrusion extending from the main surface, each of the first and the second protrusions being placed at an edge of the main surface of the landing.
Adel Benhaj JILANI, Radu P. BRADEAN
Filed: 23 Aug 18
GRANT
Utility
Reduced stack voltage circuitry for energy storage system diagnostics
19 Jan 21
Systems and methods to provide a low voltage interface coupleable between an energy storage device or a DC power source (e.g., fuel cell stack, battery) and one or more AC signal diagnostic systems.
Jacob W. Devaal, Hooman Homayouni, Farid Golnaraghi
Filed: 13 Jul 16
APP
Utility
Membrane Electrode Assembly with Supported Metal Oxide
14 Jan 21
A membrane electrode assembly comprises a polymer electrolyte interposed between an anode electrode and a cathode electrode, the anode electrode comprising an anode catalyst layer adjacent at least a portion of a first major surface of the polymer electrolyte, the cathode electrode comprising a cathode catalyst layer adjacent at least a portion of a second major surface of the polymer electrolyte; at least one of the anode and cathode catalyst layers comprising: a first catalyst composition comprising a noble metal; and a second composition comprising an iridium-containing metal oxide supported on a cerium oxide support.
Rajesh BASHYAM, Lida GHASSEMZADEH, Kyoung J. BAI, Esmaeil Navaei ALVAR, Ping HE
Filed: 13 Feb 19
GRANT
Utility
Compression apparatus for fuel cell stack
12 Jan 21
A fuel cell stack assembly is disclosed comprising: a fuel cell stack comprising a first end plate, a second end plate, and a plurality of fuel cells interposed between the first and the second end plates; and a compression band which urges the first end plate towards the second end plate along a first face of the fuel cell stack and also along an opposing second face of the fuel stack in a stacking direction thereof in at least two passes on each face of fuel cells stack, thereby applying a compressive force upon the plurality of fuel cells in the fuel cell stack.
David Myers, George Skinner, Emerson R. Gallagher
Filed: 13 Jun 16
APP
Utility
Membrane Electrode Assembly with Fluoro Alkyl Compound Additive
22 Jul 20
A membrane electrode assembly comprises a polymer electrolyte interposed between an anode electrode and a cathode electrode, the anode electrode comprising an anode catalyst layer adjacent at least a portion of a first major surface of the polymer electrolyte, the cathode electrode comprising a cathode catalyst layer adjacent at least a portion of a second major surface of the polymer electrolyte; at least one of the anode and cathode catalyst layers comprising: a first catalyst composition comprising a noble metal; and a second composition comprising a metal oxide; wherein the second composition has been treated with a fluoro-phosphonic acid compound.
Rajesh BASHYAM, Ping HE, Siyu YE
Filed: 16 Jul 18
GRANT
Utility
Use of neural network and EIS signal analysis to quantify H2 crossover in-situ in operating PEM cells
2 Mar 20
Methods for detecting a hydrogen leak and quantifying a rate of the same in a polymer electrolyte membrane fuel cell stack are provided, as well as a fuel cell diagnostic apparatus that diagnoses a hydrogen leak in a fuel cell stack.
Ghassan Hassan Mousa, Jacob William De Vaal, Farid Golnaraghi
Filed: 17 Aug 16
APP
Utility
Cathode Electrode Design for Electrochemical Fuel Cells
29 Jan 20
A membrane electrode assembly including: an anode electrode; a cathode electrode; and a polymer electrolyte membrane; wherein the cathode includes a first cathode catalyst sublayer including a first precious metal catalyst composition and a first ionomer composition including a first ionomer and a second ionomer; and a second cathode catalyst sublayer including a second precious metal catalyst composition and a second ionomer composition including a third ionomer; wherein the first ionomer is different from the second ionomer in at least one of chemical structure and equivalent weight.
Siyu YE, Alexander Man-Chung LEUNG, Kyoung BAI, Dustin William H. BANHAM, Alan YOUNG
Filed: 28 Sep 17
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