How does it work?
Bubble-free electrolysis
Our stack works without producing gas bubbles, significantly increasing active surface area and efficiency.
Gases can escape through the non-flooded porous electrodes to the dry gas collection channels. Electrodes' hydrophobic coatings prevent liquids going through, but gases go through easily.
Bipolar plateless stack
Conventional electrolysers use bipolar plates to connect cells electrically and separate gases, representing 15-25% of total stack cost.
Our stack eliminates these plates by using a novel architecture. Every second electrode is flipped, so neighboring electrodes have the same polarity. This means the same gas exits them into the gas collection channels, avoiding gas mixing risk.
In-situ catalyst redeposition
Rotation is useful for spreading liquids uniformly. Making use of this, we can redeposit the catalyst inside our stack between operating sessions.
Catalyst degradation is one of the primary contributors to current stack lifetime of ca. 7 years. Redepositing the catalyst would allow this to increase three- or four-fold.
Higher efficiency, more power, faster startup, lower cost.
Applications
Modular H₂ production
We’re building containerized electrolyzer modules for scalable hydrogen production. Our first pilot systems integrate high-efficiency stacks with circulation, gas handling, power electronics, controls, and safety architecture for real-world operation. These pilots are validating the path toward 20- and 40-foot container deployments, with real-time monitoring and in-situ catalyst redeposition designed to extend lifetime and lower cost.
Future pathway: Yubin
Yubin is Spiral’s patent-pending generator-integrated electrolyzer — a new architecture that merges electricity generation and hydrogen production into one unit. Built to integrate directly with rotating machinery such as wind, hydro, tidal, and geothermal systems, Yubin reduces intermediate conversion steps and unlocks a radically simpler path to offshore and distributed hydrogen production.
