Bifunctional air electrode
AssigneeAllied Corporation
InventorsGeorge J. Samuels, Thomas A. Schmitkons, Terry L. Streeter, Royce W. Murray
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Abstract
Novel catalytic electrode in which the oxidation catalyst is protected from unfavorable redox potentials by an insulation/rectification matrix composed of a polymeric matrix containing an insulating and rectifying effective amount of a dispersed redox conductor.
Claims17
An improved electrical device of the type which includes a material which is susceptible to decomposition when subjected to fluctuations in redox potential, said material being attached to a surface;
- the improvement which comprises a redox matrix comprising a polymeric matrix containing an insulating and rectifying amount of a dispersed redox conductor, said redox matrix being positioned between said material and the source of said redox potential and said redox matrix allowing the flow of electrical current to said material only at selected redox potentials.
An improved electrical device of the type which includes a material which is susceptible to decomposition when subjected to fluctuation in redox potential, said material being attached to a surface;
- the improvement comprising a redox matrix which comprises a polymeric matrix containing an insulating and rectifying amount of a dispersed redox conductor selected from the group consisting of complexes of metals of the first, second and third rows of the Periodic Table, said redox matrix being positioned between said material and the source of said redox potential and said redox matrix allowing the flow of electrical current to said material only at selected redox potentials.
An improved bifunctional air electrode for use in electrochemical energy cells comprising a hydrophobic gas permeable layer on the air side of said electrode:
- and a hydrophilic layer containing a catalyst for oxygen reduction, the improvement comprising a redox matrix pressed to said hydrophilic layer containing an insulating and rectifying amount of a dispersed redox conductor.
An improved bifunctional air electrode for use in electrochemical energy cells of the type comprising a hydrophobic gas permeable layer on the air side of said electrode, and a hydrophilic layer containing a catalyst for oxygen reduction, the improvement comprising a redox matrix pressed to said hydrophilic layer containing an insulating and rectifying amount of a dispersed redox conductor selected from the group consisting of complexes of metals of the first, second and third rows of the Periodic Table.
Dependencies are inferred from the claim text.