A 6U all-in-one electrolyzer for on-site hydrogen, system development and control-protocol research.
HXB-V1 combines the HXS-2 stack with fluid handling, safety interlocks, power electronics and desktop control in one integrated platform.
| Hydrogen output | Up to 500 L/h (0.5 Nm³/h, approximately 1 kg/day) |
| System energy | 4.8 kWh/Nm³ at beginning of life |
| AC input | 2.4 kW at beginning of life |
| Hydrogen purity | 98–99% without dryer; ≥99.999% with dryer |
| Control | Desktop app, Ethernet and MQTT |
| Power supply | 200–240 V AC, 50/60 Hz, single phase |
| Feed water | ASTM D1193 Type II |
| Electrolyte | 0.3 M KOH |
| Operating current | 15–67 A, 50 A recommended |
| Size / weight | 482 × 642 × 266 mm (6U) / 51.3 kg |
| HXS-0 | Cell-scale material and MEA evaluation | Up to 25 cm² |
| HXS-2 | Reusable 2 kW stack for custom BOP integration | 0.5 Nm³/h |
| HXS-30 | Pilot stack under validation | 7.5 Nm³/h target |
| HXB-V1 | Integrated system with BOP and controls | 0.5 Nm³/h |
Compliance note: purity ≥99.999% requires a suitable dryer. CE evidence is a Declaration of Conformity, not third-party product certification.
HydroXpand Inc. is a South Korean deep-tech company that develops and manufactures Anion Exchange Membrane Water Electrolysis (AEMWE) electrodes, cells, stacks, and integrated systems. Founded in 2023 by three KAIST PhDs, we work across catalysts, electrodes, stack architecture, balance-of-plant, and control software to reduce both upfront and lifecycle costs for clean hydrogen production.
Our current portfolio includes iridium-free anodes, low-PGM cathodes, single-cell and short-stack hardware, the HXS-2 2 kW stack, and the HXB-V1 2 kW integrated system. The HXS-30 30 kW pilot stack is under development and validation. HydroXpand products have been supplied to more than 50 customers across 10 countries, and our technology portfolio includes nine patents. The HXB-V1 is supported by a CE Declaration of Conformity.
Our stack architecture is designed so that the durable hardware can be reused while the MEA is replaced, reducing maintenance cost and material waste. Customers can start with laboratory or pilot-scale equipment today and expand through a modular development roadmap toward larger industrial systems.
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