Spiral Hydrogen builds centrifugal electrolyzers that eliminate gas bubbles, achieving up to 95% HHV efficiency at high current densities (3 A cm⁻²). The plug‑and‑play system uses porous electrodes and in‑situ catalyst redeposition to deliver low‑cost, long‑life green hydrogen for industrial producers and heavy‑industry decarbonization.
Funding
€2.7M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
NEFounders
Product
Problem
Hydrogen production is dominated by fossil‑based processes, creating a large price gap that prevents widespread adoption of green hydrogen despite strong decarbonization pressure. Existing electrolyzers are limited by low efficiency, high capital cost, and operational issues such as gas bubble formation that reduce performance and lifespan.
Solution
Spiral Hydrogen has developed a novel centrifugal electrolyzer that eliminates gas bubbles by using rotation to circulate liquids and allow gases to escape through porous electrodes. The bubble‑free design achieves up to 95 % HHV efficiency and supports high current densities of up to 3 A cm⁻², enabling lower production costs for green hydrogen. In‑situ catalyst redeposition creates a uniform catalyst layer, extending the electrolyzer’s lifetime to over 30 years. By combining these advances, the system delivers green hydrogen at a lower cost than conventional fossil‑based alternatives, helping close the price gap and accelerate market decarbonization.
Target Audience
Primary customers are industrial hydrogen producers, oil refineries, fertilizer, plastics, and steel manufacturers seeking cost‑effective, low‑emission hydrogen for process integration and decarbonization.
Features
- Centrifugal pumping mechanism that circulates electrolyte, preventing bubble formation and improving mass transport
- Porous electrodes that allow gases to escape to the dry side, maintaining high electrolysis efficiency
- High current density operation (up to 3 A cm⁻²) for increased hydrogen production rates
- In‑situ catalyst redeposition for uniform catalyst layers and >30 year operational lifetime
- Plug‑and‑play electrolyzer stack designed for scalable deployment in industrial settings