Anode Electro-Catalysts for Alkaline Membrane Fuel Cells
AssigneeCellEra, Inc.
InventorsShimshon Gottesfeld, Dario Dekel
Life of this patent
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Abstract
An anode catalyst for an alkaline membrane fuel cell (AMFC) includes a catalytically active component and a catalytically inactive component, wherein the catalytically active component is selected from one or more of the group of ruthenium (Ru), rhodium (Rh), silver (Ag), osmium (Os), iridium (Ir), platinum (Pt), silver (Ag) and gold (Au)) and wherein the catalytically inactive component is selected from the group of iron (Fe), lead (Pb), nickel (Ni), cobalt (Co) and zinc (Zn).
Claims10
A catalyst for an alkaline membrane fuel cell (AMFC), comprising:
- a catalytically active component;
- and
- a catalytically inactive component;
- wherein the catalytically active component is made of highly dispersed, unsupported metal particles, with the metal selected from one or more of the group of ruthenium (Ru), palladium (Pd) rhodium (Rh), silver (Ag), iridium (Ir), osmium (Os), platinum (Pt), gold (Au) and alloys thereof;
- and wherein the catalytically inactive component is made of highly dispersed, unsupported metal particles, with the metal selected from one or more of the group of iron (Fe), nickel (Ni), carbon (C), cobalt (Co), lead (Pb) and zinc (Zn) and alloys thereof.
An anode catalyst for an alkaline membrane fuel cell (AMFC) containing palladium (Pd) or a Pd alloy as the catalytically active component.
An anode catalyst for an alkaline membrane fuel cell (AMFC) made from one of:
- a palladium-nickel alloy (PdNi);
- a mechanical mixture of palladium (Pd) and nickel (Ni) particles;
- particles of Pd shell-on-transition metal core (Pd shell particles);
- and
- a mechanical mixture of Pd shell-on-transition metal-core particles (Pd shell) and nickel (Ni) particles.
An alkaline membrane fuel cell (AMFC), comprising:
- an anode with an anode catalyst layer;
- a cathode with a cathode catalyst layer;
- and
- an anion-conducting membrane electrolyte,
- where each catalyst layer is applied to the membrane surface by spraying , casting or screen-printing a catalyst ink comprising a solvent , dissolved ionomer and a dispersed unsupported metal catalyst wherein the unsupported metal catalyst is a catalytically active component selected from one or more of ruthenium (Ru), palladium (Pd), rhodium (Rh), silver (Ag), iridium (Ir), platinum (Pt), gold (Au) and alloys thereof.
Dependencies are inferred from the claim text.