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US 12,440,894 B2Granted
Porous electrolyzer gas diffusion layer and method of making thereof
AssigneeOhmium International, Inc.
InventorsArne Ballantine, Chockkalingam Karuppaiah, Dien Nguyen, James Nguyen
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Abstract
A porous titanium sheet configured to function as an anode side gas diffusion layer of a proton exchange membrane (PEM) electrolyzer is formed by a powder technique, such as tape casting or powder metallurgy.
Claims22
A porous titanium sheet configured to function as an anode side gas diffusion layer of a proton exchange membrane (PEM) electrolyzer, wherein the porous titanium sheet is formed by a powder technique,
- wherein a first major side of the porous titanium sheet includes a groove and an opposite second major side of the porous titanium sheet has a substantially planar surface which lacks a groove,
- wherein the first major side of the porous titanium sheet has a higher porosity than the opposite second major side of the porous titanium sheet,
- wherein a continuous porosity gradient is formed between the first major side of the porous titanium sheet and the opposite second major side of the porous titanium sheet,
- wherein the porous titanium sheet comprises conductive vias extending through the porous titanium sheet in a thickness direction of the porous titanium sheet, the conductive vias comprising particles of titanium hydride, and
- wherein the porous titanium sheet includes a bimodal pore size distribution.
2 more elements
Dependencies are inferred from the claim text.