HXS-30 stack (30 kW): what goes around it

Feed water pre-treatment to meet the electrolyser specification

We tell you how far the train has to go, from your source water, the number of electrolysers and the daily water demand. Most sites need nothing beyond a single RO unit. We then source the arrangement we settled on.

Alkali-resistant pumps, tanks, tubing and flow measurement

The loop that carries KOH electrolyte through the stack and back to the tank. The same pump can be built with different rubbers and metals inside. What we do is not sell the pump, but specify the build that survives hot KOH and order it that way.

The anion exchange membrane that separates hydrogen from oxygen

The membrane we use in our own stacks, supplied in small quantities. We are not tied to one manufacturer, so we can point you to the one that fits your conditions. You do not have to meet the manufacturer minimum order.

Nickel foam, nickel felt, titanium felt and stainless fibre felt used on the anode side as electrodes, electrode substrates or PTLs

Porous metals for the anode side, used as the electrode itself, as a substrate to deposit catalyst on, or as a porous transport layer (PTL). We confirm dimensions and thickness and supply only the quantity you need. It is the same substrate our own anodes are grown on.

Bipolar plates, gaskets and end plates for stack assembly

Parts reordered by customers who assemble or maintain our stacks themselves. Orderable individually, or as a set matched to your stack configuration and cell count.

Moisture and oxygen removal downstream of the electrolyser

Hydrogen leaving the electrolyser is water-saturated. We define the downstream train to meet the dew point and purity your application requires. Our modular dryer HXD-V1 is in development.

Gas quality, dew point and flow measurement across the whole plant

Running an electrolyser means measuring gas quality, pressure, flow and leaks. We start by setting out what has to be measured where, then confirm range, accuracy, signal type and the certification required in your country before finding a model.

Boosting and storage equipment

We source and supply compressors and storage vessels. Because we know the electrolyser side precisely we can match the specification. Permitting and installation for high pressure gas stay with the site owner.