Flow cell for electrochemical ammonia synthesis

The flow cell according to any of the preceding claims, wherein the spacers have a height of between 50 μm-20 mm, more preferably between 500 μm-10 mm, and most preferably between 1 mm-6 mm, such as 2 or 4 mm.

The flow cell according to any of the preceding claims, wherein the spacers are elongated in one or more directions, and optionally shaped as bars.

The flow cell according to any of the preceding claims, wherein the electrolyte chamber comprises a cavity having two opposite ends defined by the anode and cathode, and side walls defined by an inner perimeter of a chamber frame, and wherein the spacers are detachably attached to the chamber frame.

The flow cell according to any of the preceding claims, wherein the electrolyte chamber comprises at least one fluid inlet and at least one fluid outlet such that the electrolyte chamber is configured for fluid replacement and/or circulation.

The flow cell according to any of the preceding claims, wherein the electrolyte chamber comprises flow circulation guides.

The flow cell according to any of the preceding claims, wherein the electrolyte chamber is absent an ion conducting membrane.

The flow cell according to any of the preceding claims, wherein the bimetallic Pt is in combination with a metal selected from the groups 8-12, 14, 15, and combinations thereof, and optionally comprises a third or fourth metal.

The flow cell according to any of the preceding claims, wherein the electrolyte chamber contains an electrolyte comprising one or more proton shuttling additives, selected from the group of:

• alcohols, phenol, Li-phenol oxide, hydroquinone, phloroglucinol, 1-naphthol, pyridine, and any combinations thereof.