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US 12,308,484 B2Granted
Methods of manufacturing a gas diffusion layer and an electrochemical cell incorporating the same
AssigneesInfinity Fuel Cell and Hydrogen, Inc., Ohmium International, Inc.
InventorsArne Ballantine, Chockkalingam Karuppaiah, William F. Smith
Life of this patent
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Abstract
An anode gas diffusion layer for a proton exchange membrane (PEM) electrolyzer includes a porous stainless steel sheet formed by a powder metallurgical technique.
Claims11
A method of manufacturing an anode gas diffusion layer for a proton exchange membrane (PEM) electrolyzer, comprising:
- forming three powder layers in a die cavity consisting of a noble metal powder, a mixture of stainless steel powder and lubricant, and another layer of the noble metal powder;
- compressing the three powder layers in the die cavity to form a green sheet;
- de-binding the green sheet;
- and
- sintering the green sheet to manufacture the anode gas diffusion layer for the PEM electrolyzer, wherein the anode gas diffusion layer includes a noble metal coating on a first side of the anode gas diffusion layer and on a second side of the anode gas diffusion layer.
2 more elements
Dependencies are inferred from the claim text.