Electrode-electrolyte composites having discrete regions
AssigneeHewlett-Packard Development Company, L.P.
InventorsJames O'Neil, Gregory S Herman, Peter Mardilovich, David Champion
Life of this patent
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Abstract
Various embodiments of the invention are directed towards electrode-electrolyte composites. The electrode-electrolyte composites comprise electrode material and electrolyte material. At least a portion of the electrode material is present as a plurality of discrete regions having conductive contact with the electrolyte material.
Claims16
An electrode-electrolyte composite, comprising:
- anode material;
- cathode material and
- electrolyte material;
- wherein at least a portion of the anode or cathode material is present as a plurality of discrete regions having conductive contact with the electrolyte material on a single surface side of the electrolyte material,
- wherein the individual discrete regions of anode or cathode material do not make contact with other individual discrete regions of the same material;
- and
- wherein a layer of electrode material is present at least partially as an interfacial layer between the discrete regions of similar material and electrolyte material.
An electrochemical apparatus, comprising:
- a stack of two or more fuel cell components comprised of electrode and electrolyte material;
- wherein the electrode material is deposited in at least one or more areas on a single surface side of the electrolyte material as two or more discrete regions of at least one of anode or cathode material each having conductive contact with the electrolyte material and wherein each of the discrete regions within a deposit area make electrical contact with each other;
- and
- wherein a layer of electrode material is present at least partially as an interfacial layer between the discrete regions of similar material and electrolyte material.
A method for reducing stress in a fuel cell, comprising depositing electrode material an a single electrolyte material, wherein the electrode material is deposited in at least one or more areas on a single surface side of the electrolyte material as two or more discrete regions of at least one of anode or cathode material each having conductive contact with the electrolyte material and wherein each of the discrete regions within a deposited area of either anode or cathode material make electrical contact with each other;
- and depositing one or more interfacial layers of material between the discrete regions of electrode material and electrolyte material.
Dependencies are inferred from the claim text.