Integrated AEM Water Electrolysis System – HXB-V1 (2 kW)

HydroXpand Inc.

Integrated AEM Water Electrolysis System – HXB-V1 (2 kW)

Integrated AEM Water Electrolysis System – HXB-V1 (2 kW)

Integrated AEM Water Electrolysis System – HXB-V1 (2 kW)

Integrated AEM Water Electrolysis System – HXB-V1 (2 kW)

Integrated AEM Water Electrolysis System – HXB-V1 (2 kW)

Hydrogen production: 500 L/h, approximately 1 kg/day
Output pressure: 0 or 10 barg, selectable in the desktop software
Beginning-of-life power: 2.4 kW system; approximately 54 kWh/kg-H₂
Hydrogen purity: 98–99% without a dryer; ≥99.999% with a suitable dryer
Water / electrolyte: ASTM D1193 Type II water; 0.1–1 M KOH
Control: MQTT/Ethernet desktop app, 1-second telemetry; Modbus not supported
Size / weight: 482 × 647 × 266 mm (6U); 51.3 kg
Conformity: manufacturer's CE Declaration of Conformity for LVD, EMC and RoHS

HXB-V1 — 1 kg/day hydrogen, integrated into one 6U AEM system

For teams that need a hydrogen source and an experimental platform in the same enclosure.

HXB-V1 combines the AEM stack, power electronics, electrolyte circulation, feed-water handling, sensing, safety logic and desktop control in one rack-mount system. Connect AC power, qualified water and the required gas, vent and drain lines; operate at 0 or 10 barg from the software.

500 L/h Rated hydrogen production Approximately 1 kg/day	0 / 10 barg Software-selectable H₂ output pressure
2.4 kW Beginning-of-life system power at 50 A	≥99.999% Hydrogen purity confirmed with a dryer

01 — From power and water to controlled hydrogen

Inside HXB-V1	AEM stack · AC/DC power · electrolyte circulation and temperature control · feed-water top-up · gas separation · sensing · safety logic · control software
Site connections	200–240 V AC · ASTM D1193 Type II water · H₂ and O₂ outlets · vent · drain · protective earth
Optional downstream	Drying and purification, compression, storage and the point of use are selected for the project.

02 — Control built for development work

Desktop application	MQTT/Ethernet control and monitoring through a wired LAN connection.
Direct control	Voltage · current · electrolyte temperature · electrolyte flow
Telemetry	1-second data interval with eight external control variables.
Multi-unit operation	Software design limit of up to 50 units; load assignment remains manual by unit.
Communications boundary	MQTT/JSON is supported. Modbus is not supported; off-site operation uses remote access to the control PC, not built-in cloud control.

03 — Performance stated by condition

Rated production	500 L/h, approximately 1 kg H₂/day.
Beginning-of-life power	Stack 2.0 kW + balance of plant 0.4 kW = system 2.4 kW at 50 A.
Specific energy	Stack 45 kWh/kg-H₂ · system 54 kWh/kg-H₂.
Hydrogen at 0 barg	98–99% without a dryer · ≥99.999% with a dryer.
Hydrogen at 10 barg	99% without a dryer · ≥99.999% with a dryer.
Operating current	15–67 A · 50 A recommended.

04 — Installation envelope

Feed water	ASTM D1193 Type II · ≤1.0 µS/cm at 25 °C · approximately 0.55 L/h at 50 A and 60 °C
Electrolyte	0.1–1 M KOH · initial fill approximately 5 L · circulation 2–5 L/min
Connections	H₂O · H₂ · O₂ · vent · drain: 1/4" double-ferrule · C20 AC inlet
Size / weight	482 × 647 × 266 mm (6U) / 51.3 kg
Service clearance	Front ≥300 mm · rear ≥400 mm
Environment	5–45 °C ambient · IP20 · dry, non-condensing indoor installation

05 — Safety and conformity evidence

Safety functions	Hydrogen detection · emergency stop · interlocks · automatic stop on electrolyte-tank overpressure at approximately 4 barg
CE evidence	Manufacturer's CE Declaration of Conformity based on LVD 2014/35/EU, EMC 2014/30/EU and RoHS requirements.
Pressure components	PED 2014/68/EU Article 4(3) sound-engineering-practice items are not CE-marked under PED.
Warranty	12 months from delivery, excluding consumables.

06 — Where HXB-V1 fits, and what to send

On-site hydrogen production around 1 kg/day
Stack, protocol and controls development without designing a complete balance of plant
Compact hydrogen-source integration into laboratory or OEM equipment
Training and demonstration of AEM electrolysis operation

For a useful quotation, include:

Required production, delivery pressure and purity
Duty cycle, installation environment and country
Available AC power, water quality and ventilation
Gas handling, dryer, compression and storage scope
Control interface, quantity and delivery schedule

Start with pressure and purity. HydroXpand will map the appropriate HXB-V1 and downstream configuration before quotation.

Boundary note: ≥99.999% purity requires a suitable dryer. CE evidence is a manufacturer's Declaration of Conformity, not third-party product certification.

HydroXpand Inc.

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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